Re: [DML] annoying misfire

[Richard Lew <evm2k@xxxx>]

James:

I did a full tune up on my car and found one of the
new spark wires arcing just underneath the fuel
distributor. The way I found it was the use of a
mirror to look from the back to the distributor and
saw the arcing. It took me about 2 weeks of searching
and replacing parts before I stumbled onto that.

Richard





--- jamesrguk <James_rg@xxxx> wrote:
> Hi all,
> 
> I am still having an annoying misfire, I am pretty
> sure it down to an 
> injector that is passed it's sell by date, as it is
> not spraying very 
> nicely. 
> 
> To my knowledge the spray pattern on a mechanical
> injection system is 
> more crucial than on an EFI system because the
> valves are not always 
> open at the point of injection.
> 
> I am fairly sure the misfire is fuel related for the
> following 
> reasons:
> 
> 1) My timing light suggests that all plugs are
> sparking
> 2) All plugs are less then 8 months old. 
> 3) 2 of the injectors are new, 4 are 2nd user but
> appeared to be 
> clean and ok when 1st installed approx. 10 months
> ago, and the engine 
> has run fine until recently.
> 4) All of my HT leads are new as well as the cap and
> rotor arm.
> 
> Anyway my question is really why are the injectors
> getting blocked?, 
> have I just been unlucky?
> I have a new fuel pump, clean tank, and a filter on
> the fuel pickup 
> and had the main fuel filter change about 10 months
> ago.
> 
> Any ideas?
> 
> 
> James RG
> 
> 
> 
> 
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