fuel pressure problems in a 94 jeep wrangler 4.0 6 cyl.?
I was having some fuel pressure issues in my wrangler, I changed the pump motor and the filter. Now i have a new problem, or at least a new variation. The jeep runs well with good pressure in most situations, but when it sits for more than 15 minutes or so it becomes hard to start, and idles,and runs rough for a few minutes. to me it seems like the fuel is running back toward the tank while it is off, and when i restart it, it has to have a few minutes to push it back to the engine... any ideas??
Answers & Comments
Verified answer
What you need to do is change your fuel pressure regulator.
Try changing the fuel pressure regulator
I style of believe above to apply a gas tension gauge on the gas rail. If reliable tension right this moment after turning off and restarting reliable. enable it take a seat a collectively as and watch the stress. it incredibly is going to no longer bleed down promptly. in case you have a bleed down undertaking and the engine fires as quickly through fact the stress comes up, 2 available products and not the computing device. despite the fact that if a sparkling pump, you have got a foul verify valve interior the pump, that helps the gas to run decrease back to the tank. It then takes a collectively as to recharge the device. you will discover this on the stress gauge. OR..you have a leaking injector. start up it. close down. and seem for a black spark plug. pass the injector for THAT plug to a various region which you recognize the plug in sparkling. start up and run some situations with long down time between. If that plug get's black, you have a leaking injector. Now you ought to try this with in basic terms moving plugs, yet no longer as solid, yet can artwork in case you heavily examine the plugs. reliable success