whats going on everybody! So the other day driving home from getting dinner and out of no where my AFR was going lean and I had to give it a lot of gas to get going at a stop light. got home and checked my FPR and it was around 10PSI! so then I shut off the car and and pulled the fuel pump! pump is a Walbro 450 not even a year old and car is tuned on e85. So after checking out the pump I seen that the fuel pump grommet was ripped and what killed my fuel pressure! got a new grommet and put everything back together car starts but I had to keep my foot on the gas for a min and I dont normally need to keep my foot on the gas! So after car warmed up a little bit i was able to get a idle. AFR is lean around 18 to 20 but my fuel pressure is spot on at 45psi. I checked for leaks and we are good. I did notice when putting my hand on the fuel pump sending unit i could not feel the fuel being pushed through and you can almost not hear the pump u need to put your ear up close to hear anything.

you guys think its clogged injectors or my pump took a ****? let me know what you guys think!!

 

Try a new pump if fp is still low it could be a clogged fuel filter. Wouldn't hurt to clean injectors. Do you pickle the fuel system with pump gas at all?

 

Hahaha same thing over here, I think those grommets are dissolving or something, seen this mentioned in other threads recently. I got the same ****, probably because our cars have been sitting. I just got a fuel pressure tester and a siphon to get the e85 out. I'm also on a 450, I'll try to post what I find out, but you'll probably beat me to it.