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replaced head gasket, car still wont start.
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gs30094
New User
Aug 9, 2011, 8:29 AM
Post #1 of 3
(2849 views)
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replaced head gasket, car still wont start.
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the car that im working on is a 95 escort for my father. all the trouble
started when he turned on his AC and it blew the head gasket letting
coolant leak into the engine. i have cleaned out the engine and replaced
all of the gaskets. the engine moves when i try to start so i know this
compression. its getting gas. but yesterday when i tested the coil pack
to see if power was comming off of it it didnt show that it was hot
while trying to start it. so this morning i bought a new coil pack yet
it still will not start. any suggestions?
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Hammer Time
Ultimate Carjunky
/ Moderator
Aug 9, 2011, 8:55 AM
Post #2 of 3
(2834 views)
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Re: replaced head gasket, car still wont start.
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All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.
Every engine requires spark, fuel and compression to run. That's what we have to look for.
These are the basics that need to be tested and will give us the info required to isolate a cause.
1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.
2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.
3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.
4) If all of these things check good, then you would need to do a complete compression test.
Once you have determined which of these functions has dropped out,
you will know which system is having the problem.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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nickwarner
Veteran
/ Moderator
Aug 9, 2011, 2:40 PM
Post #3 of 3
(2822 views)
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Re: replaced head gasket, car still wont start.
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When you did the head gasket, did you have the head inspected and surfaced at a machine shop? These cars were prone to warping the cylinder head and if you havent gotten it machined you may end up redoing this job shortly after getting it running.
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