Hello. My problem is that the car does not start after replacing the head gaskets. I have already checked everything, fuel valves spark, everything is fine, the suspicion is the order of ignition on my dome, the markings are 135462, i.e. the left head is burning while facing the car and the...

What engine code? Sonata G6T 3.0 V6 has this:

The order of the cylinders is recorded as their order on the crankshaft. Set the shaft to the marks (top position) and check which piston is up. In addition, check the position of the finger under the manifold cap. Connect like this:

After the firing order, do you connect the cables to the ignition device correctly - the domes? Check the position of the manifold finger with the first piston in the up position. From another V6 engine: As you can see, the ignition is 123456, but the pins in the dome are swapped. Check your dome with a meter - maybe it is similar. Cables on the sides (heads) come out 3 next to each other

From what is written on the Internet, the code of my engine is G6AT. I have drawn what is wrong with your attachment and for me it looks like this according to the dome, it smokes 1 3 5 and then 4 6 2, that is, as if the first left head would smoke, and probably it should be alternately? I'm not a michanik, but for common sense, something does not suit me, aha and one mechanic tells me that I look bad at the heads that the first cylinder is the one on the right, the first one at the ignition? I connect the wires as I drew, but is it good?

Buddy, I connected as you suggest, but I think something is bad, the engine will still try differently, but I think I found the reason ??? thanks with your interest, greetings.

Hello. I still can't start my galloper ? the engine is done, i.e. the bushings connecting rods rings generally the whole bottom the car still does not burn fuel there is a spark there is timing on the signs and silence does not even want to combine with the firing sequence as I do 123456 it shoots in the intake I don't have strength anymore, maybe someone will help best regards

For all V6 engines of this brand, the order is 123456. Shooting at the silencer is a symptom of ignition. Check carefully the valves, pressure in the cylinders.

On each psiuka 11 a shoots in the intake, not in the exhaust

Thanks, my friend, for your interest, I am also not sure about connecting the cables, I will try as you suggest and check the dome, let me know what and how.

Hello, the car started, you had the cupola wine ration

And more specifically? How did you connect as a result?

I connected it as in the photo from you And the reason was the wrong ignition device I set up 1 cylinder And it was 3 now everything is fine and buzzing ?

Hello again, it is true that the car only fires there is a problem, i.e. it fires hard on a warm engine on a cold arrow and on a warm spine it spins and spins, maybe someone will tell you?

Galloper 3.0 V6 Won't Start After Head Gasket Replacement: Ignition Order Query (135462)

Kosimazaki123456 10131 17

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#1 16809921 08 Nov 2017 18:15

Kosimazaki123456 Kosimazaki123456

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Post #1
16809921 08 Nov 2017 18:15

Hello. My problem is that the car does not start after replacing the head gaskets. I have already checked everything, fuel valves spark, everything is fine, the suspicion is the order of ignition on my dome, the markings are 135462, i.e. the left head is burning while facing the car and the right one then separately ??
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#2 16810947 09 Nov 2017 04:20

DriverMSG DriverMSG

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Post #2
16810947 09 Nov 2017 04:20

What engine code?
Sonata G6T 3.0 V6 has this:
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#3 16810978 09 Nov 2017 07:03

Kosimazaki123456 Kosimazaki123456

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Post #3
16810978 09 Nov 2017 07:03

From what is written on the Internet, the code of my engine is G6AT. I have drawn what is wrong with your attachment and for me it looks like this according to the dome, it smokes 1 3 5 and then 4 6 2, that is, as if the first left head would smoke, and probably it should be alternately? I'm not a michanik, but for common sense, something does not suit me, aha and one mechanic tells me that I look bad at the heads that the first cylinder is the one on the right, the first one at the ignition? I connect the wires as I drew, but is it good?

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#4 16811555 09 Nov 2017 13:36

DriverMSG DriverMSG

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Post #4
16811555 09 Nov 2017 13:36

The order of the cylinders is recorded as their order on the crankshaft.
Set the shaft to the marks (top position) and check which piston is up.
In addition, check the position of the finger under the manifold cap.

Connect like this:
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#5 16812293 09 Nov 2017 19:35

Kosimazaki123456 Kosimazaki123456

Level 7

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Post #5
16812293 09 Nov 2017 19:35

Buddy, I connected as you suggest, but I think something is bad, the engine will still try differently, but I think I found the reason ??? thanks with your interest, greetings.
#6 17152946 06 Apr 2018 18:42

Kosimazaki123456 Kosimazaki123456

Level 7

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Post #6
17152946 06 Apr 2018 18:42

Hello. I still can't start my galloper ? the engine is done, i.e. the bushings connecting rods rings generally the whole bottom the car still does not burn fuel there is a spark there is timing on the signs and silence does not even want to combine with the firing sequence as I do 123456 it shoots in the intake I don't have strength anymore, maybe someone will help best regards
#7 17153012 06 Apr 2018 19:26

DriverMSG DriverMSG

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Post #7
17153012 06 Apr 2018 19:26

For all V6 engines of this brand, the order is 123456.
Shooting at the silencer is a symptom of ignition.
Check carefully the valves, pressure in the cylinders.
#8 17153097 06 Apr 2018 20:11

Kosimazaki123456 Kosimazaki123456

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Post #8
17153097 06 Apr 2018 20:11

On each psiuka 11 a shoots in the intake, not in the exhaust
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#9 17153268 06 Apr 2018 21:42

DriverMSG DriverMSG

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Post #9
17153268 06 Apr 2018 21:42

After the firing order, do you connect the cables to the ignition device correctly - the domes?
Check the position of the manifold finger with the first piston in the up position.

From another V6 engine:
As you can see, the ignition is 123456, but the pins in the dome are swapped.
Check your dome with a meter - maybe it is similar.

Cables on the sides (heads) come out 3 next to each other
#10 17153682 07 Apr 2018 08:25

Kosimazaki123456 Kosimazaki123456

Level 7

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Post #10
17153682 07 Apr 2018 08:25

Thanks, my friend, for your interest, I am also not sure about connecting the cables, I will try as you suggest and check the dome, let me know what and how.
#11 17156301 08 Apr 2018 17:09

Kosimazaki123456 Kosimazaki123456

Level 7

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Post #11
17156301 08 Apr 2018 17:09

Hello, the car started, you had the cupola wine ration
#12 17156386 08 Apr 2018 17:48

DriverMSG DriverMSG

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Post #12
17156386 08 Apr 2018 17:48

And more specifically?
How did you connect as a result?
#13 17156693 08 Apr 2018 20:16

Kosimazaki123456 Kosimazaki123456

Level 7

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Post #13
17156693 08 Apr 2018 20:16

I connected it as in the photo from you And the reason was the wrong ignition device I set up 1 cylinder And it was 3 now everything is fine and buzzing ?
#14 17315924 06 Jul 2018 22:26

Kosimazaki123456 Kosimazaki123456

Level 7

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Post #14
17315924 06 Jul 2018 22:26

Hello again, it is true that the car only fires there is a problem, i.e. it fires hard on a warm engine on a cold arrow and on a warm spine it spins and spins, maybe someone will tell you?
#15 19130618 22 Dec 2020 13:52

jacek zdunek jacek zdunek

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Post #15
19130618 22 Dec 2020 13:52

Hello. Have you dealt with the fact that it fires worse on the warmer?
#16 19130776 22 Dec 2020 15:12

michal_rybka michal_rybka

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Post #16
19130776 22 Dec 2020 15:12

water temperature sensor (the one for the computer, not the indicator) and the wiring checked?
#17 19131070 22 Dec 2020 17:48

jacek zdunek jacek zdunek

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Post #17
19131070 22 Dec 2020 17:48

Sensor replaced with new wiring? I did not check. Maybe it will work tomorrow.
#18 19132566 23 Dec 2020 10:47

michal_rybka michal_rybka

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Post #18
19132566 23 Dec 2020 10:47

and valve clearances if there are no hydro tappets
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Topic summary

✨ The discussion revolves around a Galloper 3.0 V6 that fails to start after a head gasket replacement. The owner suspects an issue with the ignition order, initially noting markings of 135462. Various responses suggest checking the engine code (G6AT), confirming the correct firing order (123456), and ensuring proper connection of ignition cables. A critical point raised is the need to verify the position of the crankshaft and the manifold cap to align the ignition timing correctly. After troubleshooting, the owner successfully resolved the issue by correcting the ignition device connection, which was initially set incorrectly. Further concerns about the engine's performance when warm were also discussed, with suggestions to check the water temperature sensor and valve clearances.

FAQ

TL;DR: Fix Galloper 3.0 V6 no‑start after head work by confirming the 6‑cyl firing order and distributor indexing; “For all V6 engines of this brand, the order is 123456.” [Elektroda, DriverMSG, post #17153012]

Why it matters: Misrouted wires or a misindexed cap can cause backfires and hard starts even when fuel and spark look OK.

Firing order: 1‑2‑3‑4‑5‑6 for Galloper/Hyundai/Mitsubishi V6 family. [Elektroda, DriverMSG, post #17153012]
Cylinder order follows crankshaft; set to timing marks (TDC) and confirm rotor points to the correct tower. [Elektroda, DriverMSG, post #16811555]
Distributor caps can have swapped internal pins; verify tower mapping with a meter before routing wires. [Elektroda, DriverMSG, post #17153268]
Reported compression example: ~11 bar per cylinder during cranking on a troubled engine. [Elektroda, Kosimazaki123456, post #17153097]
Warm hard‑start check: ECU coolant temperature sensor and its wiring; also verify valve clearances if non‑hydraulic. [Elektroda, michal_rybka, post #19130776]

Quick Facts

What is the correct firing order for the Galloper 3.0 V6 (G6AT)?

Use 1‑2‑3‑4‑5‑6. This applies across the brand’s V6 engines. Route plug wires in that order around the distributor, starting at the correct tower for cylinder 1. “For all V6 engines of this brand, the order is 123456.” [Elektroda, DriverMSG, post #17153012]

Which cylinder is number 1, and how do I find it at TDC?

Rotate the crank to timing marks (top position/TDC). Confirm which piston is up and that the rotor points to the cylinder 1 tower on the cap. Cylinder numbering follows the crankshaft order, so index from TDC and rotor alignment. [Elektroda, DriverMSG, post #16811555]

How should I connect the spark plug wires on the distributor cap?

Start at the tower the rotor points to when cylinder 1 is at TDC, then connect remaining wires in 1‑2‑3‑4‑5‑6 sequence around the cap. Verify with the cap’s internal mapping before finalizing the leads. [Elektroda, DriverMSG, post #16811555]

Why does it backfire into the intake after a head gasket job?

This symptom points to ignition timing or wiring order errors. Using 1‑2‑3‑4‑5‑6 but starting from the wrong tower will cause intake pops. Re‑index the cap to true cylinder 1 at TDC and reroute. [Elektroda, DriverMSG, post #17153012]

Could my distributor cap be the culprit even if the firing order is right?

Yes. Some caps have internally swapped pins, so tower positions do not match expected order. Test continuity between rotor path and towers with a meter and re‑map wire positions. [Elektroda, DriverMSG, post #17153268]

What if my engine only starts after I move the plug wires one position?

Your distributor may be misindexed so the rotor aligns with cylinder 3 when you think it is at 1. Re‑set mechanical TDC on cylinder 1, realign the rotor, and start the wire order from the correct tower. [Elektroda, Kosimazaki123456, post #17156693]

Do the plug wires group by bank on this V6?

Yes. You will see three adjacent wires per head. That visual grouping helps verify routing, but still confirm each tower’s mapping on the cap before final connection. [Elektroda, DriverMSG, post #17153268]

What compression should I expect during cranking?

Users reported about 11 bar per cylinder on a problematic setup. Treat this as a reference point when evaluating sealing after head work. If compression is uniform yet it won’t start, refocus on ignition indexing. [Elektroda, Kosimazaki123456, post #17153097]

How do I quickly verify ignition timing after reassembly?

Three‑step check: 1. Set crank to timing marks for TDC on cylinder 1. 2. Confirm the rotor points to the cylinder 1 tower. 3. Route wires in 1‑2‑3‑4‑5‑6 from that tower. [Elektroda, DriverMSG, post #16811555]

The engine has fuel and spark but still won’t start. What next?

Confirm the cap’s internal pin layout and rotor position at TDC. If cap mapping is nonstandard, re‑map wire positions to match it. An incorrect cap or misindexed rotor is a common edge case after head work. [Elektroda, DriverMSG, post #17153268]

What causes hard warm starts on the Galloper V6?

Check the ECU coolant temperature sensor and its wiring first. A bad signal skews fueling when warm. If equipped without hydraulic lifters, verify valve clearances after the head job. [Elektroda, michal_rybka, post #19130776]

What is a distributor cap ("dome") and why does it matter here?

It routes high voltage from the rotor to each plug wire tower. If its internal paths are swapped or it’s misindexed, correct firing order will still be wrong at the plugs, causing no‑start or backfire. [Elektroda, DriverMSG, post #17153268]

How did the original poster finally fix the no‑start?

They followed the recommended wire layout and discovered the ignition device was indexed to cylinder 3, not 1. After setting true cylinder 1 and re‑connecting, the engine ran normally. [Elektroda, Kosimazaki123456, post #17156693]

What should I check first if I changed the head gaskets and it still won’t fire?

Confirm crank at TDC, rotor pointing to cylinder 1, and wire routing 1‑2‑3‑4‑5‑6. If it still fails, meter the cap to detect swapped internal pins. “Check your dome with a meter.” [Elektroda, DriverMSG, post #17153268]