anna0816 wrote: ford focus 1.8 tdci 2001, which after replacing the pump, injection cleaning the entire fuel system including cleaning the tank does not start now the candle indicator lights up and the car goes out. It only fires on the cake but it does not bring the effect because it soars that half the village can not be seen.
1.8 tdci engine ford mk1 has a diesel injection system
Common Rail SIEMENS or DELPHI. It is therefore a motor completely controlled by
injection computer from the moment the key was inserted into the ignition.
The engine starts and drives as the computer allows it. It will not light if there are no clear, unambiguous signals from
injection sensors of which only
four decide on a smooth boot. They are described in post # 9
https://www.elektroda.pl/rtvforum/topic3211008.html and
https://www.elektroda.pl/rtvforum/topic3296439.html Do not be discouraged by being different engines. They are the same
Common Raile , i.e. fuel injection parameters, starting conditions are identical or similar in all units of this type.
In general, I suggest that for the successful start of the CR engine you need the following parameters, read by the computer from
sensors referred to as:
1. Rotation of the starter and crankshaft not less than
200-250 rpm . It's best to read them by following
desktop rotation indicator and / or reading
parameters directly from the laptop connected with the 16-pin EOBD connector to the injection computer.
Then the screen should show the turns in row 1 as in the example table below with
GMP sensor and crankshaft speed .
Turnover must be within the range
200-250 rpm because the computer makes the ignition dependent on them. If they are too low, e.g. due to weakness
battery or
starter , means that
high pressure pump (pwc) did not generate sufficient fuel pressure to start, i.e.
150-200 bar . The engine will not start because there is too little starting fuel on the injectors.
Therefore, condition no
2 2. Fuel starting pressure not less than
150-200 bar (15-20 MPa) (poems 3 and 4). I remind you, this is the pressure only during
turning the starter . After a successful ignition, i.e. at idle (850 rpm), the pressure should oscillate within limits
220-290 bar (last column in the table).
The fuel pressure is measured in the container
piezoelectric fuel pressure sensor (see description in linked topics). If the computer receives an electrical signal from
sensor below
1 volt , will not allow the engine to start, because it means that the pressure does not reach the assumed value
150-200 bar .
3. Timing synchronization - reads from the poem
No. 2 . If the word is in the line at the time of starting
"NO" , means that there is no synchronization between
the bottom engine, i.e.
crankshaft , a
Mountain , i.e.
camshaft . The engine will not start, despite the impeccable condition of pwc and injectors. There must be a word
"YES" .
The timing synchronization is monitored by the computer in every split second using
two sensors :
1) GMP sensor and rotational shaft speed
2) Camshaft position sensor The first thing that should be checked in the event of starting difficulties is that
total efficiency of these two sensors . If any of them has any "shaky contacts" (eg after repair and installation, badly fastened plugs, or dirty faces, e.g. with lubricants, etc.), the engine will not start, because the computer does not know when and where to start fuel injection. He will not inject anyhow or anywhere.
Kitten KotBury2
