what now
what now
a few months ago i had a problem with my 91 240 not starting i was getting gas and spark but no start changed plugs and wires started right up i drove it for awhile but parked it do to bad weather well its nice out again so i went to get it out and it would not start again got gas and spark after cranking for awhile it fired up i went for a ride and it ran like crap spitting and sputtering so i took it home popped the hood and found oil had blown out of the dipstick tube it was not over full of oil but the oil did smell like gas is it the intake gasket if not what do i check for thanks by the way it was running real rich
ok since i shut the car off i can not get it to start again i did a comresion check and all cylinders are between 175-180 i assume this would rule out the rings i also replaced the pcv and no change i tried starting with gas pedel 2/3 way in still no start but she does backfire is there a way to tell if the intake gasket is bad i know nothing about these cars but do know that gas in the oil usaully means bad intake gasket or fuel pump but since these cars are in the tank that rules out the pump what next thanks for the help
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C-Kwik
- Moderator
- Posts: 8070
- Joined: Thu Aug 01, 2002 9:28 pm
- Car: 2013 Chevy Volt, 1991 Honda CRX DX
Check your plugs. Look for fouling from oil or fuel. And I'm not sure why you think gas in the oil is a result of a bad intake gasket. Actually I'm not even sure what you mean by intake gasket. Are you referring to the intake manifold gasket?
It almost sounds like the engine is being flooded. Get enough gas into a cylinder and try to compress it and it can force it's way past the rings and even past the spark plugs. It may be as simple as a bad injector o-ring.
It almost sounds like the engine is being flooded. Get enough gas into a cylinder and try to compress it and it can force it's way past the rings and even past the spark plugs. It may be as simple as a bad injector o-ring.
since this seems to be happening cold it could be a couple things. They are right on it about how the gas got in your oil the car is flooding and the fuel is by passing the rings into the oil. This is called washing down the cyl's. This does not mean the rings are bad. This means you have an excessive fuel condition. Start by changing your oil and filter, take the plugs out and clean them off or replace them with quality NGK's [link in my sig to find the right ones] after this is done hold your pedal to the floor and crank it till it trys to start,this will help clear the fuel built up in the intake and cyl. Once it starts to fire up start leting off the throttle til it actually fires up then come down to hold it at 200 rpm for about 20 sec's this will help it clear the fuel to the point of normal fuel intake.
Your possible problem are coolant temp sensor or as ckwik said bad oring at the base of the injector or even a dirty injector pintel. check your 2 wire coolant temp conector for corrosion clean as nessesary, also locate the procedure for setting base idle on your car and check to make sure thats right. To check to see if its an injector you need a fuel gauge to check for pressure loss after the pump pressurizes the system. this is done without the car running. You simply cycle the key to on and let the pressure build till it stops then watch it if it drops more then 10 lbs within 5 to 10 mins you have a fuel pressure loss somewhere in the system. it should hold pressure even when the pump shuts off. considering your problem it would likely be something with the injectors,either orings or internal injector problem[pintel stuck open]
Your possible problem are coolant temp sensor or as ckwik said bad oring at the base of the injector or even a dirty injector pintel. check your 2 wire coolant temp conector for corrosion clean as nessesary, also locate the procedure for setting base idle on your car and check to make sure thats right. To check to see if its an injector you need a fuel gauge to check for pressure loss after the pump pressurizes the system. this is done without the car running. You simply cycle the key to on and let the pressure build till it stops then watch it if it drops more then 10 lbs within 5 to 10 mins you have a fuel pressure loss somewhere in the system. it should hold pressure even when the pump shuts off. considering your problem it would likely be something with the injectors,either orings or internal injector problem[pintel stuck open]