3.2 running too rich

[chook]

Hi all,
I now have my 3.2 DID (2005) built and in the engine bay. Upon start up we discovered that it is running way to rich a mixture. (white smoke, rough idle, cannot rev up).
The timing is spot on TDC and pump as per the specifications in the book so I'm at a loss what to look for. Could it be that after 2 months without the battery the computer needs to be reset/recalibrated? My local MM dealer seems to think that if the injectors were not put into the same hole they came out of the computer will be out in calibration. any thoughts?
cheers
chook
p.s 4 weeks to Cape York and counting down

[Aussie_Dan]

My local MM dealer seems to think that if the injectors were not put into the same hole they came out of the computer will be out in calibration. any thoughts?

This sounds very much wrong to me. The pre-common rail DiD just has plain old 'dumb' mechanical injectors. It should not matter which position they get reinstalled in.
Is the 'check engine light' staying on?
Have you had the Paj hooked up to a computer at the dealer to check for any codes? This will likely be your best way of working out what is going on and getting it resolved....
Dan.

[Goodsy]

Maf??

[scruffy]

Sounds like the timing is out to me. Double check the timing of the cams, inj pump and TDC. Starting from scratch should find the cause. The harmonic balancer hasnt slipped and putting the timing marks out? Bob

[sharkcaver]

White smoke is low combustion temperature, not running rich.

[Phil]

Got to start with a fault code check.
That's what its made for, to point you in the right direction.

[DiDExceed]

White smoke is low combustion temperature, not running rich.

As above white smoke is not rich, its low temp combustion or it coolant.

Blue= oil
Black = fuel
White = water/coolant*

*In most cases

[chook]

Thanks for all the leads.
I don't think it is coolant related as the engine was just coming up to temp (warm) at which time we turned it off. The engine does not rev up past 1800 rpm.
Could the computer be in limp mode?
I'll get the codes checked out. Hope there are some to see.
cheers
chook

[Catchin Jack]

Below is a link which explains causes of different coloured smoke

CLICK HERE


Leo

[Rubber]

Good link!

[scruffy]

I would still recheck all of the timing marks as if the timing is out then you could have the injectors injecting fuel when the valves are open thus producing the white smoke and poor running. Bob

[Shano592]

I just stumbled on this from the RACQ website.

General info, I know ... but still ...

"Electronic injectors are often individually calibrated to the engine management computer and must be refitted into their original place. If mixed up, or the injectors are overhauled, the system will need to be recalibrated."

[Goodsy]

I just stumbled on this from the RACQ website.

General info, I know ... but still ...

"Electronic injectors are often individually calibrated to the engine management computer and must be refitted into their original place. If mixed up, or the injectors are overhauled, the system will need to be recalibrated."

This only applies to common rail DiD's. So not applicable.

[Shano592]

Oh, crud.

One more thing to concern myself over ... if I ever did more than just look under the bonnet occasionally.

[chook]

traced vacuum lines and found 2 that connect to an electronic valve that were broken during installation by the mechanic. Fixed them but now it runs rougher than ever. (should have let them stay broken . A mate still believes it is overfuelling because during the oil pump priming stage we had enough diesel spray coming out of the glow plug holes to scare all of the bees and wasps away from my grapes. More than he had ever seen in his life.
I'll be checking the fuel lines next to see if any were placed on the wrong inlet pipe etc.
The timing was checked 3x prior to fitment with No 1 & 4 pistons at TDC while the timing chain was as per book, the timing cover was on 0, the numbers and letters on the gears matched and the pump gear notched tooth was on the mark.

Keep up the suggestions
chook