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[Solved] LANOS - Issues with Lanos 1.4 Petrol + LPG 2000 Model: Shooting Filter and Stalling

PATRYKMAN1999 6456 17
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Why does a 2000 Daewoo Lanos 1.4 petrol/LPG backfire and stall when I press the gas?

The problem was most likely a faulty ignition coil; after replacing the coil for PLN 80, the Lanos stopped backfiring and stalling and then ran properly at low and high revs [#16951302][#17294382] Before that, members advised checking for intake or vacuum leaks, the mixer or gas hose connection, and any damaged rubber elbows because extra air can cause this behavior [#16895745][#16896555][#16897314] Other suggested checks were the spark leads, timing/shaft position sensor and pulley alignment, engine grounds, and an ECU reset by disconnecting power briefly with the engine off [#16896184][#16896767][#16943284][#16897027]
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  • #1 16894239
    PATRYKMAN1999
    Level 17  
    Posts: 902
    Rate: 39
    Hello, as in the topic. Lanos 1.4 2000 r petrol + gas. Just like in the video, he shoots when he gets gasped and goes out. At idle as far as it is but this is not it. It works better on gasoline. New cables, new candles, new reducer. shoots and goes out. What could it be?

    [Film: 3f18c74d9b] https://filmy.elektroda.pl/91_1513433712.mp4 [/ film: 3f18c74d9b]
    [Film: 3f18c74d9b] https://filmy.elektroda.pl/11_1513433881.mp4 [/ film: 3f18c74d9b]
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  • #2 16895259
    zibi999
    Level 16  
    Posts: 212
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    You haven't done timing there lately?
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  • #3 16895745
    g107r
    Level 41  
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    PATRYKMAN1999 wrote:
    New cables, new candles, new reducer.
    And the emphysema and the intake pipe covered with tape?
    Take it swap, they don't cost much.
    Got any mistakes? Engine light is on? You can read the errors yourself.
    What is this gas and should it be on the screw?
    Fires, no vacuum tube fell off, didn't damage the rubber elbows?
  • #4 16896184
    sebap
    Level 41  
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    If the cables are poor, he will shoot.
  • #5 16896376
    PATRYKMAN1999
    Level 17  
    Posts: 902
    Rate: 39
    g107r wrote:
    And the emphysema and the intake pipe covered with tape?
    Take it swap, they don't cost much.
    Got any mistakes? Engine light is on? You can read the errors yourself.
    What is this gas and should it be on the screw?
    Fires, no vacuum tube fell off, didn't damage the rubber elbows?


    Glued up with tape, but buying a new one will not do the trick, so again I have already put my money down the drain for 650 zlotys because that is what the gas generator wanted and the problem is still unsolved. The cost of this gum is PLN 100. There are no bugs. Rather the oldest gas. What screw I don't understand?. No hoses fell off.

    Added after 1 [minutes]:

    sebap wrote:
    If the cables are poor, he will shoot.


    I bought JANMUR cables, the gas engineer said it was crap and he set up new NGK cables, it is the same as for the others, but you know money down the drain.
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  • #6 16896555
    g107r
    Level 41  
    Posts: 5240
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    https://www.google.pl/search?q=96351640&ie=ut...fox-b&gfe_rd=cr&dcr=0&ei=Slw2WvihIu2kX8-0m5AH
    https://www.google.pl/search?q=96182227&ie=ut...fox-b&gfe_rd=cr&dcr=0&ei=W2U2Ws-HHuakX-C5m6AO
    In regmot, probably about 70 both + shipment. I do not press against the pipe, but you should buy a blowout.
    PATRYKMAN1999 wrote:
    No hoses fell off.
    How do you know ? Not everything can be seen, and the rubber bands into the plastic hoses cannot be scratched and broken. It all falls under the "left air" and it is not appropriate to ignore it. link
    Enter "register lpg" and see how it looks. Enter the name of your LPG installation, and see what the installation doses gas. What's on the hose from the evaporator to the mixer?
    What about mistakes and what did you give PLN 650 for?

    NGK can be, but not French. In terms of wires and candles, you should find out in advance what the owners like their lanos. The current selection may be wrong, everything went pretty seriously head and neck in the quality offered.

    You may have something else typical, but so far you can see so many of these videos, a leaky inlet and possible degeneration of 2gen gas to the first by the gasifier, which will not overwhelm the gassed lanos.
  • #7 16896689
    PATRYKMAN1999
    Level 17  
    Posts: 902
    Rate: 39
    96182227 and when it comes to this emphysema, will not buy such j with the second hole? because you know I have gas.

    Added after 2 [minutes]:

    and you have to do extra

    Added after 2 [minutes]:

    If that helps, it switches to gas by itself. So it's probably the newer generation

    Added after 2 [minutes]:

    g107r wrote:
    What's on the hose from the evaporator to the mixer?


    hmm you can't see what's in there

    Added after 4 [minutes]:

    there are no errors
  • #8 16896727
    enhanced
    Level 43  
    Posts: 10427
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    You can see that there is a gas screw and not a crotch.

    This gas hose is glued in front of this glued pneumothorax pipe, is it wrong because you can't see it?

    Videos recorded on gas or petrol? Although you say that it also shoots on gasoline only?

    Have you ever acted before because you changed a few things, why?
  • #9 16896767
    g107r
    Level 41  
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    enhanced wrote:
    This gas hose is glued in front of this glued pneumothorax pipe, is it wrong because you can't see it?
    I'd say it looks like it has a mixer with a rubber band just behind the filter, and you don't need to cut anything, but ... you can't see exactly and there might be a nice wire-mod in this setup.
    Cut out is not a problem, but I also do not press on the intake tube if it is currently tight. It's something else, oil vapors have a field to show off the adhesive tape, there aren't so many of them in the pipe, because in theory, the oil is before gluing the pipe, while the reality is an oily pipe all the way to the filter, usually ...
    Is there any elpigaz in the middle of the engine compartment?
    There are no errors, but the engine light is on when the ignition is turned on?

    There is an old way, we do a reset of the driver with a clamp, programming of idle if you like and driving. Everything on gasoline, no gas / LPG. Only work on gasoline, which will give us an idea if it works properly and well.
    With the spark itself, there are several things that can influence its creation.
    Non-original coils, timing, or rather the shaft position sensor and a shifting pulley - someone mocked the matter, and the engine harness.
  • #10 16896977
    PATRYKMAN1999
    Level 17  
    Posts: 902
    Rate: 39
    enhanced wrote:
    You can see that there is a gas screw and not a crotch.

    This gas hose is glued in front of this glued pneumothorax pipe, is it wrong because you can't see it?


    This is how the bottom is glued. It is introduced there because it must be known because the gas installation

    enhanced wrote:
    Videos recorded on gas or petrol? Although you say that it also shoots on gasoline only?


    on gas, he shoots occasionally on petrol. When moving off, one and two shoot the worst

    enhanced wrote:
    Have you ever acted before because you changed a few things, why?


    Previously, everything worked, but from the beginning it was so slimy, half the gas was elegant and it choked him from the half.

    Added after 5 [minutes]:

    g107r wrote:

    There are no errors, but the engine light is on when the ignition is turned on?

    gone, you know, all are on and off, normal.

    There is an old way, we do a reset of the driver with a clamp, programming of idle if you like and driving. Everything on gasoline, no gas / LPG. Only work on gasoline, which will give us an idea if it works properly and well.
    With the spark itself, there are several things that can influence its creation.
    Non-original coils, timing, or rather the shaft position sensor and a shifting pulley - someone ridiculed the matter, and the engine harness. [/ Quote]

    What should I do with the engine running? with this clamp? unfasten for 10 seconds yes ?. I doubt it will help but ok.
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  • #11 16897027
    g107r
    Level 41  
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    RESET ON OFF.
    Otherwise, you have a chance to break the alternator.
  • #12 16897314
    enhanced
    Level 43  
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    https://www.elektroda.pl/rtvforum/topic1034911.html#5242793
    Check what you have there, whether this gas hose is just a hose or a mixer, it's good if you showed the pictures of this contraption, what is there after disassembling the hose going from the air filter to the throttle.

    I would recommend getting the same one and testing (without connecting the gas) as it is on gasoline. On the road, of course, but maybe someone is on the Allegro
  • #13 16943076
    PATRYKMAN1999
    Level 17  
    Posts: 902
    Rate: 39
    I have ordered an ignition coil for now, let's see if it helps. That's what the mechanic said
  • Helpful post
    #14 16943284
    g107r
    Level 41  
    Posts: 5240
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    Rate: 977
    GM companies?
    What about the lower pulley and timing? I understand that you already have a soldered engine harness, all cubes cleaned, and engine masses checked?
    What else did the mechanic say? What did he do, what did he check, how did he answer the questions we all asked here?
    Are you still paying, are you trying to verify these hints yourself?
  • #15 16951302
    PATRYKMAN1999
    Level 17  
    Posts: 902
    Rate: 39
    Who would have thought that it was enough just to replace the ignition coil for PLN 80 .. than to pack PLN 800 for other parts. Maybe someone will need this topic in the future :) . Lanos no longer grunts, does not fire, works properly at high and low revs. The subject to close, thank you all for the help offered.
  • #16 17032515
    PATRYKMAN1999
    Level 17  
    Posts: 902
    Rate: 39
    Unfortunately, there is a problem again .. it breaks a bit .. this coil should be hot? Warm? cold ?. Could someone give me a link to the original coil (4 pin) from GM, for example from the Allegro portal? how much does such an original coil cost more or less? The old one cannot be repaired?
  • #17 17043350
    PATRYKMAN1999
    Level 17  
    Posts: 902
    Rate: 39
    Will someone give you ?????
  • #18 17294382
    PATRYKMAN1999
    Level 17  
    Posts: 902
    Rate: 39
    Who would have thought that it was enough just to replace the ignition coil for PLN 80 .. than to pack PLN 800 for other parts. Maybe someone will need this topic in the future :) . Lanos no longer grunts, does not fire, works properly at high and low revs. The subject to close, thank you all for the help offered.

Topic summary

✨ The discussion revolves around issues with a 2000 Lanos 1.4 petrol + LPG model, specifically concerning stalling and backfiring when accelerating. The user reports that the vehicle runs better on gasoline than on LPG, despite having replaced various components such as cables, spark plugs, and the reducer. Responses suggest checking the timing, intake pipe, and potential vacuum leaks. The user later identifies that replacing the ignition coil resolved the stalling issue, leading to improved performance. However, concerns about the coil's temperature and the possibility of recurring problems are raised, prompting inquiries about sourcing an original GM coil.
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FAQ

TL;DR: A Daewoo Lanos 1.4 (2000) that backfires on LPG/petrol was fixed by an PLN 80 ignition coil; “Who would have thought… just replace the ignition coil.” [Elektroda, PATRYKMAN1999, post #16951302]

Why it matters: This FAQ helps Lanos owners quickly diagnose shooting/backfiring and stalling without wasting money.

Quick Facts

What usually causes a Lanos 1.4 on LPG to shoot/backfire and stall?

Ignition weakness and unmetered air are prime causes. In this thread, a failing ignition coil caused backfiring on LPG and petrol. Leaky intake bellows or loose vacuum lines worsen mixture on throttle tip-in. Start with intake leak checks, then verify spark quality and coil output. Replace visibly taped bellows and inspect rubber elbows. “Left air” from cracks mimics a bad tune. Clear ECU codes and test on petrol only before touching LPG settings. [Elektroda, g107r, post #16895745]

Is replacing the ignition coil a confirmed fix here?

Yes. The owner replaced the 4‑pin coil for about PLN 80 and the car stopped grunting, shooting, and stalling across the rev range. This single change solved what PLN ~800 in other parts did not. Quote: “it was enough just to replace the ignition coil.” [Elektroda, PATRYKMAN1999, post #16951302]

How do I check for intake leaks on a taped ‘emphysema’ (intake bellows)?

Visually inspect the bellows and every rubber elbow for splits under the tape. Check that vacuum tubes have not fallen off and that plastic hose inserts are not cracked. Any leak adds “left air,” leaning the mix and triggering backfire. Replace the bellows rather than re-taping. Also inspect the hose between evaporator and mixer. [Elektroda, g107r, post #16895745]

Can bad plug wires really cause shooting?

Yes. Weak or poor-quality ignition leads can cause misfire and intake backfire, especially on LPG’s higher ignition demand. If you changed to budget leads and symptoms began, refit quality leads (e.g., NGK) and re-test. Keep plug gaps correct. “If the cables are poor, he will shoot.” [Elektroda, sebap, post #16896184]

How do I safely reset the ECU on a Lanos during diagnosis?

Use the battery clamp method with the engine OFF only. Disconnect to reset, then reconnect, perform idle learning, and road-test on petrol. Do not pull the clamp with the engine running; that risks alternator damage. Keep accessories off during the reset. [Elektroda, g107r, post #16897027]

What are the correct intake part numbers and where do they fit?

The thread cites 96351640 and 96182227 for Lanos intake plumbing. These relate to the bellows/pipe sections near the air filter and throttle body. Reported pricing was about PLN 70 each from Regmot, plus shipping. Replacing these restores sealed intake flow and reduces backfire risk on LPG. [Elektroda, g107r, post #16896555]

How can I isolate LPG from the diagnosis and test on petrol only?

Do this simple sequence: 1. Reset ECU with engine off. 2. Start and complete idle learning, then drive only on petrol. 3. Confirm stable operation before reconnecting/adjusting LPG. Quote: “Everything on gasoline… Only work on gasoline, which will give us an idea.” [Elektroda, g107r, post #16896767]

What is an LPG mixer (and ‘gas screw’) on older systems?

A mixer is a venturi insert before the throttle that blends LPG vapor with incoming air. The ‘gas screw’ is an external adjustment for vapor flow on basic systems. If you see a hose into the intake and a screw, you likely have an older, mixer-based setup rather than a full sequential system. Photos after removing the filter-to-throttle hose can confirm. [Elektroda, enhanced, post #16897314]

Where should the LPG mixer be relative to the intake pipe?

In this car, the mixer typically sits just behind the air filter, before the throttle. Avoid cutting if the intake tube is tight and leak-free. Oil vapors can undermine taped joints, so prioritize an intact bellows. Check for Elpigaz or similar components in the bay to identify system type. [Elektroda, g107r, post #16896767]

How do I verify ECU/engine faults if no MIL is stored?

Confirm the check-engine light turns on with ignition, then off after start. Read codes even if the light is off, as intermittent faults may store. Inspect vacuum routing and electrical connectors before replacing parts. Document any LPG controller codes separately. “You can read the errors yourself.” [Elektroda, g107r, post #16895745]

Could timing, crank sensor, or the lower pulley cause similar issues?

Yes. A misindexed lower pulley, a failing crankshaft position sensor, or wiring faults in the engine harness can degrade spark timing and cause backfire. Clean connector cubes and verify engine grounds. Use OEM-spec coils where possible for stability. [Elektroda, g107r, post #16896767]

Is the 4‑pin GM ignition coil recommended for this Lanos?

The discussion points to a 4‑pin coil and asks about GM-branded units. Choosing an OEM or reputable-brand coil reduces misfire under LPG load. Match the connector type and mounting style. Keep a spare if your old unit showed intermittent faults. [Elektroda, g107r, post #16943284]

How much money can a correct diagnosis save in this scenario?

A correct diagnosis saved the owner about PLN 720: PLN 80 for the coil versus roughly PLN 800 previously sunk into other parts. This highlights testing spark first on backfire complaints. Quote: “pack PLN 800 for other parts.” [Elektroda, PATRYKMAN1999, post #16951302]

Does auto-switching to gas mean I have a newer LPG generation?

Auto-switching suggests a more advanced controller, but appearance of a ‘gas screw’ indicates an older mixer-based system. Inspect the hose from the evaporator to the intake and look for a mixer ring. Photos help confirm the exact setup. [Elektroda, enhanced, post #16896727]
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