79 ford ranger F150

[RedNeck Glory]

it is getting gas in the oil and shooting flames out of the carbi am think it is the fuel pump any suggestions

 

[88mudder]

sounds like a timing issue

 

[rusty ol ranger]

Gas in the oil?

Does it have the factory motorcraft carb? My guess is the power valve has ruptured and its getting waaaay overfueled.

later,
Dustin

 

[pillen140]

i would agree with the over fuelled. check the carb float.

 

[Jrrrrrr]

Pretty sure it is not the fuel pump. Definatly sounds like to much fuel if it is in the oil.

 

[rusty ol ranger]

Power valve power valve power valve.

My 79 i had had did the same thing.

Its supposed to open with vaccum at full throttle to let fuel bypass the throttle plates to give the engine more. If its ruptured your engine is getting as much fuel as it needs at full throttle at idle.

later,
Dustin

 

[Ruffinit]

+1 to Rusty.. Power valve is only about $20 and if it hasn't been replaced before it's probably due.. Check the vacuum hose to it, it'll probably have fuel in it also, that's how the fuel gets into the oil via the manifold.

As for your fuel pump question, this is going to be a manual fuel pump, so it's only going to put out 5-7 psi anyway.

After you square this away, do a tuneup on the carb using your manual and then do it a second time taking your time.

 

[Will]

Power valve power valve power valve.

My 79 i had had did the same thing.

Its supposed to open with vaccum at full throttle to let fuel bypass the throttle plates to give the engine more. If its ruptured your engine is getting as much fuel as it needs at full throttle at idle.

later,
Dustin

It could be the power valve. Needle and seat is another thing to check.

The power valve is actually held closed by manifold vacuum. The diaghram over-powers the spring and closes the valve. When you toe the pedal, the vacuum drops and the spring starts to win, allowing the valve to open. When you tune the carb you are changing the spring rate to adjust how much vacuum drop it takes to open the valve. A ratty camshaft that idles at a low vacuum signal can sit there with the powervalve open because it doesn't have enough vacuum to close it. It can play merry hell with your carb tuning if you don't think about it. Anyway, it's a transitional metering aid; the next step after the accelerator pump, and meant to keep the mixture in check before the main circuit comes online, not a full-throttle meter.

 

[dstoffel2]

Still check your fuel pump i have seen them leak gas and fill the motor full of gas. There is suppose to be a weep hole somewhere but that usually gets blocked. So instead of leaking out the hole it fills the motor.