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Re: my 85 mustang "gremlin"
"walt peifer" <lensman@tampabay.rr.com> wrote:
>
> "trainfan1" <lmsearing@usdatanet.net> wrote in message
> news:1sOdnYs5MPRxuwjeRVn-vA@usadatanet.net...
>> stang85_5 wrote:
>>> I have a 1985 mustang gt H.O. 4bbl and every time it starts getting
>>> warm it
>>> starts to cut out really bad and wants to die especially when I
>>> press on the gas. I've replaced the fuel pump, plugs and wires, fuel
>>> filter, and cleaned the carb but nothing works. A mechanic at my
>>> work said it might be
>>> the ignition module so i replaced that and it got better for about a
>>> week and then started again. It seems to get worse each time I drive
>>> it. Do you
>>> think the problem is in the wiring to my ignition or is it something
>>> else.
>>> PLEASE HELP!!
>>
>> You've mentioned several carb issues - but not once addressed
>> enrichment. How is the accel. pump & power valve?
>>
>> Rob
>
> If the car starts and run fine when cool (had to tell from post) but
> starts to perform poorly when warm to hot, there are several things to
> check: 1)thermal breakdown of original ford coil
> 2)excessive heat from from of motor boiling fuel in metal line at
> front of motor.
> 3)thermostat not opening properly
> 4) EGR malfunction (bad gaskets or erosion of plate on back of motor)
>
> the 85 4 bbl cars no the early CFI cars have no computer or brain box.
> just simple duraspark coil and ignition module. Some of these vehicles
> have a hot idle compensator ( small module on a vacuum line going to
> carb) that will stick and make and engine run rich (black or gray
> smoke that makes eyes water)
>
> power valve and accelerator pump (small rubber diaphragm in front of
> carb) will cause a stumble when accelerating, but car will run smooth
> at idle.
>
> one last thing to check as some states/regions change fuel mixtures as
> cool/cold weather approaches the small viton seal on the float bowl
> needle and seat have been known to break down and either stick and
> starve the engine or disappear and not seal thereby causing a rich
> condition.
>
>
>
Replace the coil... they fail sooner or later, anyway; and it just MIGHT
be the problem.
But the pointers to the carb should not be ignored, either.
--
Yeh, I'm a Krusty old Geezer, putting up with my 'smartass' is the price
you pay..DEAL with it!
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