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View Full Version : Car is breaking up

coolmanvette75
06-19-2012, 09:10 PM
Need some help guys. The car is breaking up pretty bad. I thought I noticed a very slight hesitation around 2k rpm the other day when I was driving but I disregarded it. Today on the way to the cruise night at etown it started going it again. I took it through first and second gear at about 3/4 throttle and it was breaking up real bad throughout the rpm band. Cruising at about 2k under load it would do it too. Though, it seems to idle normal. Does anyone have any ideas. I know the first thing that everyone will spit out is the opti but I want to rule out everything else before that. I was thinking maybe a burnt up wire of a clogged fuel filter but I really dont know...
Blackbirdws6
06-19-2012, 09:14 PM
Any codes? I assume no? How is your opti vent line? Test the coil too. You know the drill.
coolmanvette75
06-19-2012, 09:23 PM
Car has the light on for deleting egr/air/evap and not tuning out of the computer so idk if there are any new codes...
S.J.SLEEPER
06-19-2012, 09:49 PM
Im gonna scream it.......OOOOOOPPPPPPTTTTTTTIIIIII !!!!!
coolmanvette75
06-19-2012, 09:53 PM
Kohler made a few good points via text. Gonna pull the plugs and make sure that they arent burnt up, check wires and other small things before I dig deeper
Jersey Mike
06-19-2012, 10:21 PM
You check to see if the injectors were all seated fully? In my case, it was as simple as that.
coolmanvette75
06-19-2012, 10:23 PM
Didnt check this but I havent touched the injectors since March and it ran fine till now. Whats the best way to check?
LTb1ow
06-20-2012, 07:09 AM
Spray something flammable around the injectors see if idle changes.

Falls under vac leaks.
sweetbmxrider
06-20-2012, 07:36 AM
Start simple? All above suggestions are really good.

Me personally? I'd go drive it with a fuel pressure gauge on.
LTb1ow
06-20-2012, 07:47 AM
Start simple? All above suggestions are really good.

Me personally? I'd go drive it with a fuel pressure gauge on.

You are biased :lol:

I told him the same thing though :kneeslap: permanent whiplash damage
Blackbirdws6
06-20-2012, 08:33 AM
Chinese Walbros....
coolmanvette75
06-20-2012, 11:43 AM
Removed #1 cylinder plug and this is how it looked.

http://i235.photobucket.com/albums/ee291/coolmanvette1975/2012-06-20120124.jpg
No bueno. Also found a slight crack in one of the boots that looks like it just started.

http://i235.photobucket.com/albums/ee291/coolmanvette1975/2012-06-20120903.jpg

Gonna do plugs/wires and take it from there. Also, I set the timing from 5* pulled to 1* (lowest the box goes) and made 5 wot pulls. No break up
t0rtur3d
06-20-2012, 11:45 AM
check your ignition control aswell as the wires and plugs.
greenformula92
06-20-2012, 12:56 PM
Looks like its time for new plugs and wires
Blackbirdws6
06-20-2012, 01:51 PM
Did you change to colder plugs before the nitrous?
LTb1ow
06-20-2012, 01:54 PM
Sweet red conduit.
coolmanvette75
06-20-2012, 03:38 PM
Did you change to colder plugs before the nitrous?

Yes
sweetbmxrider
06-20-2012, 09:03 PM
What's wrong with the plug?
coolmanvette75
06-20-2012, 09:09 PM
Flash kind of altered the pic but it was straight black
sweetbmxrider
06-20-2012, 09:37 PM
So what caused that?
coolmanvette75
06-20-2012, 09:43 PM
Running rich (due to driving around pulling timing). I also soaked the plugs a few weeks ago at atco (cross read the jet paper and put in the 200 fuel jet instead of 150 :facepalm:) which I'm sure did not help things
LTb1ow
06-21-2012, 08:20 AM
Running rich (due to driving around pulling timing). I also soaked the plugs a few weeks ago at atco (cross read the jet paper and put in the 200 fuel jet instead of 150 :facepalm:) which I'm sure did not help things

Your lucky that 150 shot didn't blow the welds on your intake.