|
|
|
|
| Author |
|
|
Registered
Join Date: Jul 2004
Posts: 12
|
Please help confirm diagnosis - vacuum leak...
Hello - 1993 325i, 149K miles.
Starts fine, erratic idle once warm. I have new plugs in it and a BMW tech has said he seriously doubts it is the ICV based on the behavior. Once warm, it runs the same with or without the oil cap on - there is a SLIGHT change for a moment but the car does not sputter or die. Sometimes it hesistates from idle when trying to accelerate, sometimes it dies completely, and sometimes I can't get it to move without bogging unless I rev it to 2500 RPM and drop the clutch The car has code "1222" HUNDREDS and HUNDREDS of times, literally. I let the car pull codes via the gas pedal/check engine light method for SIX HOURS and it read 1222 the WHOLE TIME. I finally gave up, I was hoping to clear it but started to worry about frying the circuit board or the battery. So, I'm thinking that a vacuum leak is the most likely suspect. Any other thoughts? Places I should look for such a leak first? Paul |
||
07-15-2004, 12:49 PM
|
|
|
Registered
Join Date: Oct 2002
Location: Atlanta
Posts: 549
|
spray brake cleaner all over the motor and see if it picks up rpm`s
|
||
|
07-17-2004, 04:54 PM
|
|
|
Registered
Join Date: Jul 2004
Posts: 12
|
I appreciate that feedback but I'm not a fan the theory - spraying highly flammable liquids that are also hard on plastics and rubber onto said engine...
I think I have access to a smoke machine used for such a diagnosis - after a few hours of running the car is back to its old ways so I will get it up to the shop soon to see if we can find a leak... Thanks again for contributing, I'm just a safety nut... Any other places you would suggest checking? I know nothing about this smoke test thingy... |
||
|
07-18-2004, 06:30 PM
|
|
