Xion

Ok so i got my car running after extensive refreshing of almost everything under UIM. Car and parts are new OEM. So it ran great for a day and then yesterday it started idling low while parked when I ran AC and headlights and stalled. Today I checked and smelt gas, I saw gas in the small pocket space next and underneath the hose that feeds gas to the fuel pressure dampner. A few months ago this guy was leaking until I tightened the t bolt clamp on it (placed on the neck of the FPD not the barb). The leak stopped back then so naturally this time I assumed the leak was coming from there this time. Well I tried running fuel pump and seeing and even feeling it was leaking from there and I dont think so... So this leads me to my question, can gas leak from those metal fuel injector caps? Maybe I didnt tighten those in enough. Those caps are the ones with screws but I replaced them with some hex bolts. If those dont leak then Im thinking of putting another fuel injection t bolt clamp on the hose that goes to the FPD. Ideas guys?

Xion

I circled the fuel injector cap in red. Can this cause a leak if the cap is loose? Because I checked one of the bolts and it was loose so I replaced it with one of the OEM screws and it tightened real good.

I think these bolts aren’t tightening fully because they don’t have the spacers on them? Could that be it?

the area around this secondary injector seemed wet so I’m thinking it possibly is leaking from here. Maybe even primaries are leaking because they all have these bolts on them with no spacer

someone please let me know. Thank you

boostin13b

If they are both loose enough and the Injector lifts enough for fuel to get past the o-ring then It can leak, but if the other bolt was tight that most likely isn't the case. If it were, the Injector most likely would not reseat and stop leaking. It would be a major leak at that point. Factory injectors can leak from the body in which case it would need to be replaced, o-ring could be damaged and leaking that way as well. You can take them to a professional for a cleaning and inspection if you are worried the case is leaking.

Xion

I actually had them sent out and cleaned and got them back a few days ago. Lubed up the o rings and plopped them in there. The area around that injector looked wet and I can’t see any other leaks. Usually it was the hose that goes to the fpd but that doesn’t look like it’s leaking at all when I switch the car to on and prime the fuel pump. When I prime the pump nothing seems to be leaking actually which led me to believe maybe these metal caps were seeping?

is it because the hex bolts I put on there don’t have spacers? That’s what I was thinking because the OEM screws came with spacers.

also you can see the gasoline puddle in that picture in the crevice if you look

boostin13b

Did you happen to replace that dampener too? Those are known for leaking externally and causing fires on our cars so if that was not replaced I would definitely lean towards the dampener leaking.

Another possible cause since you aren't seeing anything during priming is if you have a leak on the lower part of the rails with your grommets. When you boost, it could be blowing air and fuel out of where the grommet is supposed to be sealing.

gracer7-rx7

iTrader: (16)

+1 on potentially leaky Fuel Pulsation Dampener aka FPD. Check the FAQ for history on that.

Xion

yup dampener is brand new and OEM from Atkins.

as for the boost issue I don’t think that’s it because I disabled boost while I was driving (was trying to get rid of bad gas so didn’t want to boost)

boostin13b

Then I would say check all your o-rings and hoses. You may have pinched or rolled an o-ring when installing. Did you lube them before you installed the parts?

Xion

I guess they could have been pinched or rolled but I doubt it because I applied a heavy amount of lube to the 2 o rings on each injector. As for the hoses I checked those and they don’t seem to leak when I prime the fuel pump

thats why I thought it was the metal cap that sits on top of the injectors because the one I think that was leaking had a somewhat loose right bolt, the other one was tight

gracer7-rx7

iTrader: (16)

maybe bridge fuel pump and ground on the diagnostic box and look for fuel leaks