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Need some CIS\fuel distributor\dead cyl advice..
Need some CIS advice...
ok... so at idle my 3.3L is missing in one cyl (#5) things I've done: pulled the plug wire and the idle didnt change.. reved it up to 3000 and pulled the wire.. power drops when wire is pulled.. held the plug-wire to ground and it sparked... cracked banjo fittings on the top of the fuel distributor.. every other cyl dropped off when cracking the line. a nice spurt a fuel too as pressure bled off.. #5 cyl almost no pressure, no "spurt" of fuel.. switched #5 and #6 injector.. problem stayed with #5cyl.. sent fuel distributor back to "fuel injection corp" who rebuilt it..theybench tested it... said it was working perfectly... now im totally lost... whats the next step in diagnosis?
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SWB Last edited by air-cool-me; 11-03-2005 at 03:55 PM.. |
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10-31-2005, 04:03 PM
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Well, if you're not getting any fuel out of the fuel distributor to one injector, it kinda looks like 'Fuel Injection Corp' dropped the ball, doesn't it?
ianc
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BMW 135i. Nice. Fast. But no 911... "I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79 |
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10-31-2005, 04:05 PM
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well im getting a small amount.. but its not "spurting" like the other 6...
i sent it back Friday... today they call me and say "its on the bench.... and its working great... we even had our senior tech on it" i forgot to add that when I switched injectors right when i fired it up the idle jumped to 1200rpm... sounded great... but only for a few seconds.. when i cracked the #5 cyl it fell off like it was working... when i tightened the fitting it never came back... and i made sure that sucker was tight... I could never duplicate that result..
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10-31-2005, 04:13 PM
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I agree, sounds like it wasn't rebuilt properly. How exactly are they bench testing it? It sounds like you personally confirmed that the #5 spot on the FD isn't flowing like the others, so I would think the FD is the problem. Also, you could swap #5 and #6 altogether, i.e. run the #5 line and injector the #6 cylinder, and the #6 line and injector into the #5 cylinder. All you would have to do is swap their spots on the FD. See if the problem then moves on to cylinder #6, if it does it's your FD. All injectors should get the same flow so I don't see a problem with swapping their order on the FD, at least temporarily.
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10-31-2005, 06:23 PM
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i was thinking the same thing.. but.. i have the metal lines.. maybe i can make it work..
i will have to check tommarow..
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10-31-2005, 06:32 PM
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Check for vacuum leaks. I've had this problem on CIS cars in the past. Spray some carb or brake cleaner arround the manifold to head contact area and see if the idle changes. Also spray where the injector enters the manifold.
The fact that at a higher RPM the cylinder is OK would indicate a leak, as the RPM increases the leak is negligible comparred to volume of air being drawn into the motor. |
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10-31-2005, 07:45 PM
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really? a vacuum leak will Kill a cyl?
i will check this out... thanks alot guys..
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SWB Last edited by air-cool-me; 10-31-2005 at 08:19 PM.. |
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10-31-2005, 08:10 PM
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Nick, it will only kill a cyliner at low revs
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10-31-2005, 09:15 PM
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alright.. I will check for leaks..
still dont know why there is no fuel pressure.. but maybe i have a bunch of problems..
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10-31-2005, 09:32 PM
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IM A LITTLE FLUSTERED so forgive me...
no vacuum leaks.. changed a plug...changed a plug lead... the left bank of cyl's has a TON of pressure when you crack the line.. the right side has very little... 5 still has none... the think was "bench tested" by "fuel injection corporation" they said it was fine.... back in the car ... and it STILL doesn't work... moved JUST the fuel lines( a PITA with hard-lines) from dead #5 to #4 and the problem moves to #4... so the problem is before the lines... whats before the line you ask? THE ****ING FUEL DISTRIBUTOR! the only thing i haven't done is check system pressures.. I only have one SC fuel pump(year old)....instead of the turbos two pumps..... but theres no reason why one bank would have a ton of pressure and the others have none at idle.....i will check tomorrow... someones ass is grass... this motor is 3000miles old and Im the only one in the god dam world with a 5cyl turbo that isnt an Audi....!!!! 
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11-03-2005, 03:54 PM
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Quote:
My customer bought a new Fuel Dizzy but I later convinced him to go EFI.  Go after the rebuilder. Good luck. Sprint. |
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11-04-2005, 04:43 PM
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