The car has problem starting in morning. After it starts it will start fine the rest of the day.. I have replaced erg valve spark plugs and wires. and a valve that goes to the carborator. I finally covered the engine at night and in the morning the car starts.. Where is the distributor cap on this car and how do I replace it.
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Re: Where is distributor cap on 1987 chevy cavalier
The car should have a coil pack...when you changed the plugs and wires they cap would have been at the top end of the plug wires. other wise it wil be at the front of the car where the plug wires or sparkplugs run to
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Glow plugs. Check the connection and activation of the glow plugs at morning startup. Once it's warmed, their not needed and it will start easily all day. 6.0s and 7.3s are known for this problem. I replaced many of them. You have to pull the valve covers to replace them, their underneath the valve covers. Just unscrew them from the head, screw and tighten the replacements, connect the wires and put the covers back on. With new gaskets of course.
have diagnostic codes checked to see if you have a cam or crank sensor fault. make sure fuel pressure is at the required pressure, just testing to see if you have fuel at the valve is not enough. replace all spark plug wires. if you replaced two then all are just as old and even when they "look good" does not qualify as "they are good". Replace coil pack. start up drive away happy
How long since a tune-up? Any applicable trouble codes? If you have that spider fuel system, that system is noted for problems. Check the fuel pressure, key on engine off, 60--66 psi. After it starts it will run with less pressure. In the past I have seen service bulletins about the poppet valves sticking, the fix was a cleaning procedure, that was a shop procedure.
Mainly the bulletin talked about hard starts in the morning because of poppet valves sticking, after it starts it will usually run fine the rest of the day, after it sits overnight, you have the same problem the next morning.
There could be other issues?
If it cranks good but won't start, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure and fuel injector pulse.
the erg valve sensor would not stop the engine from starting,so you still have the problem you started with,lets go back to the orginal problem which was?.[car wont start]so im sorry to say its very seldom a sensor will not let an engine,i think you have another problem and a good up to date analizer should pick it up .adrian,,,,
check for spark and fuel at the motor! take one of the spark plug wires off and remove the spark plug and put the wire back on it and rest the spark plug on a negitive ground point and have someone try to start it and see if the is spark. to check to see if fuel is getting up there locate the fuel presure relief valve on the fuel rail that the injectors are connected to and while someone it trying to start it depress the valve and see if fuel squirt out.