fuel distributor problems on my new turbo!

[air-cool-me]

ok... so the motor was rebuilt by a shop back home..

the fuel distributor was rebuilt because it wasn’t working properly.. the injectors were "bench tested"

now.. with 2000miles on the car...

I was adjusting the valves and setting the mixture (was real rich) and i had a miss at idle.. a little plug pulling narrowed it down to cyl 4 and 5..

when i cracked the lines(by "I" i mean my mechanic and me...)
cyl 5 had almost no pressure... no "spurt" when the line was cracked... only a minor dribble.. and cyl4 had more pressure then the rest..


when the RPM's are raised above 2200 everything clears up.. # 4 and 5 come back and all is well...


so after a little hard driving #4 works... so im guessing that was a clogged injector..

but what about # 5? the fuel distributor is re-built

i am going to drain my gas tank and see if theres any crap in there...

any other ideas?

[928ram]

Nick,

Probably want to repost or have this moved to tech...

There's a screen at the fuel inlet to the dist.; pull this and have a look to see if you've got any rust or sludge. (and clean it of course)

There are also screens within each cylinder's banjo fitting atop the dist.; again pull, check, clean.

Dont know how access is on the 911 units, but if you pull all the cylinder lines at the dist. then jump the relay to energize the pump, you can then just slightly lean on (pull up?) the air plate and observe if the flow is even from the dist itself; keep some rags handy, and this also works to "zero" the mixture adjustment.

Last thing I can think of is that there may be some debris in the control slit to that cylinder; you'd have to pull the dist. and remove the piston to clean it out.

[air-cool-me]

oh sorry... how did i post it here... over to tech it goes..