[DMCForum] Misfire problems
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[DMCForum] Misfire problems



List :-

I have been having misfire problems for months and I am slowly 
eliminating every possible cause.

BACKGROUND & SYMPTOMS:

This all happened when on the way home from work a water pipe burst, 
the engine did not get excessively hot as it happened just as I got 
to my drive, the temp gage was low and I saw the steam straight away.

I took of the water pump and replaced the pipe and then I have had 
this problem ever since.

When 1st started the engine runs rough and will stall as soon as you 
touch the accelerator until the car is suitably warm, generally idles 
rough and pops and farts during general driving.

THINGS THAT HAVE BEEN CHECKED:

1) Injectors - all seem to have a good spray pattern and spray the 
same quantity of fuel, I did change 2 that I was not 100% happy with.

2) Cap and rotor are in good condition, sparkplugs are new and gapped 
correctly, coil is new, HT leads are new and get power to the plugs.

3) I checked the emissions with my gas analyser and they seemed to be 
fine - (within the legal limit)

4) Vacuum leads are new (in the engine bay) and I get a good vacuum 
reading from the intake manifold when the car is running.

This is driving me nuts, the car doesn't drive terribly well as it 
pops and farts as well as having a general lack of power, and it 
idles like a dog.

I have got lots of shows coming up and need to get her up and running 
again.
Any advice welcome (could timing have anything to do with it?)

Regards


James RG
UK
VIN 5462



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