Re: [DML] 911, engine running on 3 cylinders MORE INFO
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Re: [DML] 911, engine running on 3 cylinders MORE INFO



I have no idea what could be causing this :( , or how to 
intentionally cause it.  The block could not isolate the ground for 
only one bank.  The coil wouldn't cause only half the plugs to fire, 
consistently, all the time.

It could be that because the plug wires on the passenger's side are 
longer than the ones on the driver's side, so the resistance of the 
wires causes the spark to jump out somewhere else.  Possibly it is 
the coil, or rotor.  Try taking one of the wires from the side that 
works and put it on the distributor in place of one of the non-
working wires.  Does it work now?
How long of an arc can the coil throw?  Take one of your good wires 
with a plug in it and have an assistant crank the car while you 
slowly move the plug away from ground.  MAKE SURE YOU USE a grounded 
set of pliers for this or you WILL GET SHOCKED.  Take a jumper and 
run it from your pliers to the engine block.  This will give the 
electricity a place to go rather than through you.
You should get a spark at least 3/4" long.  If not something is too 
weak.
Let us know what you find.

Matt Smtih

--- In dmcnews@xxxxxxxxxxxxxxx, "odell_andy" <odell_andy@xxxx> wrote:
>
> thanks for your help guys. my car (or me) is Jinxed.
> i have the 3 groups of 2 distributor cap. it is really starting to 
> annoy me that you have to dismantle so much to get the distributor 
> off.
> i definately have no spark on 1,2,3  and great spark on 4,5,6.
> 
> i have now had 3 mechanics look at the car, they have all said its 
> not possible to have only 3 sparking unless it had 2 distributors.
(i 
> have all new leads, (except coil to dis) yet all mechanics 
confirmed 
> the problem after looking at the car.
> Would it be possible for the coil to cause this? or....
> someone said maybe the distributor is from a 4 cylinder car so...
> the distributor has BOSCH 0 237 402 023 and TGRU6 (THE R IS 
POSSIBLY 
> A P) is this the right part?  (looks right in photo from 
> specialtauto. couldnt see part # though.
> ROTOR ARM PART # BOSCH 123433  (THERE IS A CIRCLE WITH 2177 R5 IN 
IT)
> 
> ANYONE WHO HAS ANY IDEA WHY EVEN 1 LEAD/PLUG WOULDNT FIRE PLEASE 
> HELP!
> 
> stupid things i have checked include;
> is only half the engine earthed!
> pulse coil tests 550
> spark leads test 300 (approx)
> cap is on correctly. could the cap "be bad"? there are no 
> cracks/fractures/chips on it. all contacts are equally shiny.
> coil is wired up correctly, but i havent replaced it since i bought 
> the car. i dont remember the part # but it is bosch, black, and 
> has "oil filled coil" stamped on the side.
> 
> if you wanted to make your engine do this, how could you?
> could the aluminium block insulate somehow?








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