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Pool of gas in Thottle body

Tiny
WUTSUPY
  • MEMBER
  • 1990 PONTIAC SUNBIRD
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 90,000 MILES
Today I changed plugs, sprayed oil in cylenders, and just looked over the engine as a whole. It has an operating injector, has spark and has compression.

I pulled on the trottle and I looked down in to the Throttle Body, there is a large pool of gas in the botton of the Throttle body. So the car is not getting gas to the cylenders, right? So this is why it must not be running?

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Monday, December 6th, 2010 AT 7:00 PM

8 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
If you have that much gas in the throttle body, either you have a bad injector, or the timing belt is broken and it isn't taking fuel into the engine.

Check that and let me know what you find.
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Monday, December 6th, 2010 AT 7:04 PM
Tiny
WUTSUPY
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  • 59 POSTS
Injector is good it sprays into the Body. And timing belt is good.
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Monday, December 6th, 2010 AT 7:10 PM
Tiny
WUTSUPY
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Well from what my dad told me when the belt broke on it before it screwed alot of things up and blew the starter up and that has not happened
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Monday, December 6th, 2010 AT 7:12 PM
Tiny
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Sorry I dint give you all the details, ill start from the beginning. A few years ago it stopped getting gas and would not run. Me and dad poured gas in the throttle body and it would run. I replaced the pump, fuel filter, injector, fuel pump relay, wires. It still did not work so me and my friend hauled it to school. There we replaced the oil pressure switch. Still no gas than we hot wired the pump and replaced the ignition module. Than we got a injector pulse and gas, it would now inject. We than tried to start it but it wouldn't start so we sprayed ether in the throttle body and it wouldn't start so we checked for spark, it does get spark. We than called my dad to help us out and he noticed the pool of gas. The thing is it ran before we replaced the ignition module and that was only 2 weeks ago
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Tuesday, December 7th, 2010 AT 1:43 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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If you have spark and fuel, it should run unless there is a broken timing belt. If you are getting too much fuel, it won't run. Have you checked the fuel pressure regulator?
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Tuesday, December 7th, 2010 AT 3:53 PM
Tiny
WUTSUPY
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  • 59 POSTS
I popped off the cam/valve cover and the cam was rotating and opening/closing the valves. So the timming belt is in working order. I also considered it is REALY FLOODED, so maybe if I just crank it over for a long time it may clear it self out.
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Tuesday, December 7th, 2010 AT 5:03 PM
Tiny
WUTSUPY
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  • 59 POSTS
How would I check the fule pressure regulator. And I dont think it is that becasue I unplugged the injector in a attempt to burn out the gas that is currently in it.
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Tuesday, December 7th, 2010 AT 5:07 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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IF you disconnect the regulator, the pressure will increase. To check the regulator, with the engine running, if you disconnect it, the pressure should increase between 5 to 10PSI. Also, check the vacuum hose to the regulator for any evidence of gas.

Let me know.

Also, if you go to our home page, you will find a section titled, Do It Yourself. Select it and look for checking fuel pump pressure. There are directions and a video.

Let me know what you find.
Joe
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Tuesday, December 7th, 2010 AT 5:12 PM

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