I have changed the fuel pump, carb, and coil, and spark plugs which were sooty. Any help would be appricated.
2007-03-21 13:48:25 · 7 answers · asked by vwspurg 1 in Cars & Transportation ➔ Car Makes ➔ Ford
The surging sounds like a vacuum problem. When you
replaced the carb are you sure you hooked up the vacuum
lines to their original locations?
Are you getting fuel at the EGR valve?
Interesting problem, sounds dangerous though....
Good luck with this one...
2007-03-21 14:17:28 · answer #1 · answered by lifestudent 3 · 0⤊ 0⤋
Sounds like 1 of 2 possible problems. The first is that someone connected live vacuum to the egr valve. As the rev's go up, s does the vacuum which opens the egr. The resulting exhaust injection fills the cylinder with exhaust instead of air and the rev's go down, causing the valve to close and the rev's to go up again. That was 1. The second is a problem we had back in the early 80's with full size carb'd engines. The fuel cap pressure relief valve was defective and the tank built up so much air pressure, it would ram the fuel through the carb at three times the pressure of the pump.
2007-03-21 14:32:06 · answer #2 · answered by shopteacher 4 · 0⤊ 0⤋
More info needed!!Did you have this problem before the tune up?If not recheck your fireing order,You could have misplaced two or more plug wires resulting in a misfire and causeing raw fuel to leak down the cylinder bore into the oil!
2007-03-25 13:24:38 · answer #3 · answered by Bird 2 · 0⤊ 0⤋
What year is your car? I have a 82 and it had a bad head gasket leak between the intake valve of #4 and the oil jacket.
Drove me nuts for ages. Had the same thing my oil smelled like pure gas.
2007-03-21 15:59:32 · answer #4 · answered by asccaracer 5 · 0⤊ 0⤋
mayby if u didnt have parkinsins in your foot your engine would surge up and down like a *****!
and as for gas in oil, your rings are sucky and need to be replaces.. do a pressure test and go from there!
2007-03-21 14:18:25 · answer #5 · answered by Anonymous · 0⤊ 0⤋
What carbureutor did you change to,it may be jetted for a 350,your sooted plugs mean it is jetted too rich..Try to jet it down one size at a time.
2007-03-21 14:20:16 · answer #6 · answered by gdwrnch40 6 · 0⤊ 0⤋
sounds like it has been flooded.change the oil and filter
2007-03-21 13:51:27 · answer #7 · answered by malemute1 4 · 0⤊ 0⤋