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hemi joe 05-16-2009 04:52 PM

hard starting when engine hot
i'am having problems starting my 87 caprice 5.7litre after it is running for a cranks very slowley like battery is low,after it sits for a couple minutes it will kick over.when car is cold it fires right up.started doing this after trans was rebuilt and new flywheel installed i also put a accel super coil on car.i also put new thermostat in.any thoughts would be greatly appreated.THANKS JOE :confused:

bobjob 05-16-2009 05:48 PM

how old is starter?maybe worn out. possible bad bushings.

hemi joe 05-16-2009 05:57 PM

Starter Is New Just Put In In March.

eloc431962 05-16-2009 06:16 PM

What kind of exhaust are you running on your car ? Sounds like it might be getting hot. Cole

hemi joe 05-16-2009 07:13 PM

Stock.didn't Have A Problem Untill Trans Was Rebuilt And New Flywheel Was Installed.i Did Add An Accel Super Coil During That Time If That Would Make A Difference?

hemi joe 05-17-2009 11:38 AM

do you think it's possible when starter was reinstalled some wireing may be coming in contact with the exhaust.starter is a high torque starter and was working fine before. :confused:

eloc431962 05-17-2009 12:10 PM

Yes it is very possible it has happened to me before. Cole

carsavvycook 05-17-2009 12:18 PM

Have you replaced the battery cables?

hemi joe 05-17-2009 12:23 PM

i will look into that the moment i'am having a new rear put in yes the old one was shot and i was luckey it didn't blow.i hope after trans work and rear are done i can get back to working on motor. :drool:

hemi joe 05-17-2009 12:25 PM

yes has new battery and cables.

jafroyd 05-17-2009 05:07 PM

have you shot the timing in with a light? Sounds like too much initial timing.

carsavvycook 05-17-2009 05:18 PM


Originally Posted by hemi joe
yes has new battery and cables.

Check for the fine print on your new battery cables, to make sure it does not say 6 gauge. These will not be able to handle, or supply the proper cranking amps on a hot V8.

DoubleVision 05-17-2009 05:24 PM

If the timing is correct, and everything else seems up to par. Add grounds. Run the factory ground to the block, not the alternator bracket. Next run another ground from the block to the frame. You can use the brake line hold down under the engine on the cross over frame. Make sure you clean the contact areas real well. Check the factory grounds, there should be one on the firewill to the intake, make sure it`s connected and clean.
This is what I had to do to my Olds cutlass surpreme. I had a header pipe that rode on the starter so it got hot fast. After I added grounds no more starter problems. The added benefit was the lights were brighter and the alternator didn`t have to work as hard to provide the same power.

hemi joe 05-17-2009 05:54 PM

factory ground is running to the block but i will look into the other grounding options thanks JOE.

hemi joe 05-27-2009 04:37 PM

problem back,from old thread hot caprice hard start.
hey guys,this is from another thread about my 87 caprice 5.7L having hard starts on hot motor.once again this problem has happened but this time on cold mechanic replacing my rear said when they tried to start car smoke was comming from near starter,cooked small ground wire from battery cable(third time this has happened)and cooked ground wire from starter.he said he added heaverier gauge ground wire,seems to be question is do i have wrong gauge battery cables because this is ex police car with high amp.alternator(which is also new)and high output starter?also would adding accel high output coil have anything to add to this problem? :confused:

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