Hi all, new to the forum after purchasing my first p-car last week. It's an 86 951 that I picked up in Cincinnati and brought back over to southwest VA, and I love the damn thing. I noticed a very strong smell of fuel the past couple of days, after finding a puddle of gas under my car, I investigated further and found what appeared to be fuel under the intake manifold (photo attached below). After pulling the fuel rail and and removing the injectors, I noticed that one of the injectors wasn't as dry as the rest; and that it has a cracked pintle cap. Could this be the source of the leak? Some more wetness on the cam cover is almost parallel to where this injector is, leading me to believe this is the culprit.

All help is appreciated. Sorry for the large photos, I hope the formatting comes out okay.


Puddle next to cam cover under intake manifold

Dampness near the bad injector

Injector #3 w/cracked pintle cap

 

The cracked pintle cap shouldn't cause an issue as the o-ring above is what seals the injector in the intake manifold. I would start by replacing the injector o-rings and spacers and replace the flexible fuel line on the fuel rail. The cracked pintle cap should be replaced as well.

Inspect the pulsation damper and fuel pressure regulator for any corrosion that could potentially cause aeak under pressure. Replace any rusted or corroded components.

Get all of the gas cleaned up thats sitting on the engine and start the engine and check for any fuel leaks.

 

Also since you have the injectors out you might send them to be refreshed and flow checked. I have used this shop for my Jag and 928 very happy with his work.
https://jaguarfuelinjectorservice.com/
Dan

 

If the injectors need new o-ring seals and pintle, contact Jason at Paragon Parts Porsche

 

I would also inspect the fuel lines, pressure regulator, damper and the fuel rail itself.

 

Check the rail, especially in corners where it´s welded together. There is crackdetection to be bought on spraycans if you serch the net.

 

Thanks for all the help everyone. I'll be getting an injector seal kit from paragon and a new lindsey fuel line that goes from the dampener to the rail. I'll reinspect the FPR. the fuel rail itself looks to be crack free after scrutinous looking. Will keep everyone posted.