i just went through my sons 77 280z and replaced the fuel pump and i checked fuel pressure and it ran for a minute and started sputtering and shuts off the pressure dropped to 15 psi and i started and it took off did the same thing so i dropped the fuel tank and drained out the gas and let it dry out and got some gas in a 5 gallon gas jug and stuck the hose and started it ran good with good pressure so i went and ran 130psi out of my tank and puff the dust flew out so i went and put the tank back in after i shot air into it few times and it runs with good pressure so now is the idle it is to high so i hope this helps.
I have a problem. I just bought a used 1995 Kawasaki 220 Bayou. The engine started running a little rough at first. Kept getting worse and then started backfiring through the exhaust. I had the carbeurator rebuilt but still runs rough and backfires. Cranks good and idles good. What could be my problem? Thanks
Well a lot,first be sure the wires are in good shape, replaced the plugs,do a tune up.
The year, make and model info would be helpful but a large vacuum leak could do that.
Backfiring in any motor is either badly out of time or a burnt valve.
Buy a Chevy :)
yes, backfiring is always due to ignition or timing problems. Backfiring through the carb can be a symptom of a lean condition.
Your ignition timing needs to be adjusted.
Either the timing is excessively retarded or you have a worn camshaft or related problem.
Backfiring through the carburetor and no power would seem to be symptoms indicating a problem with your timing. Have the distributor checked.
Simple get the 4 liter engine instead more power and better MPG runs quieter and everything
You will need to refill the tank the pump the fuel through the lines.
Just went through the same problem car was sputtering gas milage went way down was running very rough it felt like it was going to stall everytime I came to a stop,I changed everything you did still the same,then I changer the O2 SENSOR the top one by the manifold car is running great now sensor is about 70-80 dollars very easy to change just remove heat shield and it's very to acess