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steve569

Member

• Feb 29, 2024

• #1

2005 , td4 need advice, this bag of crap has had,
NEW -
BATTERY
HIGH PRESSURE PUMP
LOW PRESSURE PUMP, FILTER
INJECTORS
FUEL SENSORS
and still wont fire up, just turns over and tries to start
have had it running, in a fashion prior to fitting new injectors
just a money pit and getting to stage where i neither have the time or inclie to continue, but its the wifes pride and joy

 

Nodge68

Well-Known Member

• Feb 29, 2024

• #2

Sounds like you need to go back to the beginning, with live data.
You can get to the point where so many items have been replaced, that if one replacement item is faulty, you've no idea what the true issue is. Firing a parts cannon is often an expensive and unreliable way to solve an issue.

So start with basics like fuel pressures from both low and high pressure pumps, and making sure the crank and cam sensors are reporting back to the ECM.

 

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steve569

Member

• Mar 2, 2024

• #3

cheers that was my next step, start again from the beginning
it was in a garage last year for 3 months, they gave all the excuses under the sun for not doing it

it sounds like a compression problem?,seems like nothing there and then suddenly it tries

 

J_D

Well-Known Member

• Mar 2, 2024

• #4

steve569 said:

cheers that was my next step, start again from the beginning
it was in a garage last year for 3 months, they gave all the excuses under the sun for not doing it

it sounds like a compression problem?,seems like nothing there and then suddenly it tries

Click to expand...

Compression issues can sound like it trying to start, as it gets to the cylinder with low compression the starter can turn over quicker due to the lack of compression holding it back. Oscilloscope on battery and prevent from starting (fuelpump relay out) and readout will show battery voltage at each stroke, all should drop around the same amount as each cylinder comes into compression whilst cranking over.

 

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weyert

Member

• Mar 2, 2024

• #5

did you put the new injector codes in? with the diagnostic box

 

Nodge68

Well-Known Member

• Mar 2, 2024

• #6

weyert said:

did you put the new injector codes in? with the diagnostic box

Click to expand...

No coding needed on the FL1.

 

Messerschmitt

Well-Known Member

• Mar 3, 2024

• #7

Try spraying "quick start" (carburetor cleaner, polish, brake cleaner, ether, etc.) into the air duct. If the problem is low compression, it is necessary to start. Next, monitor how the engine will work

 

Nodge68

Well-Known Member

• Mar 3, 2024

• #8

Messerschmitt said:

Try spraying "quick start" (carburetor cleaner, polish, brake cleaner, ether, etc.) into the air duct. If the problem is low compression, it is necessary to start. Next, monitor how the engine will work

Click to expand...

This might work.
However be warned that such products aren't recommended on compression ignition engines, as it can cause damage to the engine internals.