ARRRRRGGGHHH!

After realizing I had a bad seal on one injector at the manifold mounting rather than the fuel rail mounting, for the second time I might add (same injector), I decided today was the day to straighten that out. Took off the rail, replaced all 8 seals, rings and plastic hats, replaced the rail and injectors.

Same problem!!! There is fuel swelling up around the manifold connection of injector # 3 (counting cylinders with #1 at the back).

This is the same original problem, it even seems worse now! Damn!!!

After coming home and pouring a nice stiff vodka tonic, I'm wondering what to do. The gas that is coming out makes me nervous, it is actually dripping, slowly but steadily, down the intake runner to the side of the head.

A leaky injector?? I'll check the top new seal at the rail and see if it's coming from there, but I'm sure it's swelling up from the manifold hole.

Maybe someone was aggressive in cleaning out the manifold hole and opened it up a bit?

Sh*tty aftermarket injector seals? The other three are o.k.....

As a quick fix, what sealant would you recommend to put around the injector/manifold connection that would hold for a week/month/day?

I appreciate the advice and / or speculation....


Thanks, Josh

Just a thought
When the engine is running the intake manifold in under 20-23 inches of vacuum at idle. Any leak of the injecter oring seal would result in air and whatever fluids are in the imeadiate area being drawn into the manifold. If fuel is gathering around the injecter at the seal and dripping down the side then the seal is in fact good and the injecter body above the manifold seal or the top fuel rail to injecter seal is the sorce of the leak.

We sure don't want you looking like my friend Crispy, He liked to tune carburaters by ear.

Good Luck

rjc

Since you are now an expert at yanking the injectors, why not swap the location of the leaky one for another and see if the problem moves. If it does - it's the injector, if not, it's the fuel rail. No matter what it looks like...it sure aint leaking from the bottom up.

Now why would you count cylinders from the flywheel when every manufacturer in the world counts from the accesory end?

Eh... not every mfr counts from the front of the engine with inline motors. Then you've got H, V, and W motors. Yikes.

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alex

Ok, my VW aircooled flat-4's count 1 and 3 nearest the flywheel. Still the front of the CAR, so I'll go with that.

1-2 are the right side head, and 3-4 the left side. And, odder still, the #3 is furthest forward. From the front, or flywheel end, it's 3-1-4-2. Go figures.

But I can't think of a single inline example that does anything weird with cylinder numbering. Saab 900 with their weird backwards arrangement perhaps?
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Rob Bareiss, New London CT ::: 87 244DL, 88 245DL, 90 745GL, 84 242DL project, 89 244 parts, 88 244DL to replace the 87

I was "almost" certain that I had qualified that statement with the word "most". I knew about the V-dub pancake motor, and I think Corvair did the same thing. I didn't say front or back, I said flywheel and accessory ends... for a reason. Your Saab example, for one. Same with the Maserati powered Citroen SM - the engine faced rearward but the end with the timing chains is where the numbers started.

If it's really coming from the injector-manifold junction, the injector's broken.