krisking94
Member
- Joined
- Oct 6, 2014
So I replaced my MAF and it immediately got rid of my knock issue. Did some WOT pulls after I drove it around a bit, did really good no knock what so ever. Was the first time in probably a year since the car has hit full throttle like that. After that I decided to lower my FP because I had increased it a bunch before to see if that would help with the knock. Before it was at like 48 line on and it jumped to almost 60 line off. I changed it to 43 line off and it dropped to about 34 line on. After that did did a couple more runs, got some knock. Changed it back up to what it was at. No knock. Started car this morning, started just fine. I let it run for about a minute then it stalled out. Started it again ran for a couple seconds then stalled out. Well thought it might have been the fuel filter because my brother who previously owned it said it had been 5 years since it had been replaced ( I know) Got it in car started up. Set FP back to 43 line off. Drove it around went fine, got it back home then it stalled out before I put it in park. Put some fuel cleaner in it, and bumped the fuel pressure back up to what it was at previously. Did another pull, eased into the gas then went foot to the floor. No knock except shifting thru the gears (came up, then immediately went away after gear change) parked it, then I went for another drive and it started to sputter again like it was starving for fuel. Went back home, fuel pressure at rail was at about 45 line on. Weird thing is I couldn't hear the fuel pump prime up from inside the cabin like normal. If you got real close to the gas tank then turned the key you could hear the prime pump but hardly. At some points I felt like I couldn't hear it prime at all. I think what's going on is the pump and filter both went bad after those first couple of hard pulls, hadn't been pushed like that in some time. It seemed like every time I would check the FP it was inconsistent with what I had last set it at. So my brings you to my question, is the fuel pump bad and only showing sings intermittently? I have a fuel pump at home already for the car.