Results 1 to 4 of 4
Thread: ls 3 e-rod motor help
-
09-25-2010, 05:26 PM #1
- Join Date
- Sep 2010
- Location
- oklahoma
- Posts
- 6
black- 87 monte ss
ls 3 e-rod motor help
hi i am finishing up a ls 3 e rod motor install in a 55 2 dr sedan.it keeps putting up 171 and 174 lean codes. i can hear a vacuum leak on the front of the engine on the pass side.i figure this is the cause of my code. my question is. i have checked the vacuum to the evap sol and the vacuum to the foul oil plate under the intake they are not leaking and the air filter tubing is not leaking. i think the intake is leaking at the head. has anyone seen this happen on a new gm crate motor? any other normal causes for a vacuum leak in that area i should look for? thanks for any help you guys could offer.doug
-
09-26-2010, 04:14 AM #2
- Join Date
- Apr 2008
- Location
- Madison, WI
- Posts
- 7,006
1999 Formula WS6 M6-sold- 2001 Silverado Z71
It could also be one of the o-rings for one of the fuel injectors. You could try spraying carb cleaner or throttle body cleaner in those areas and listen for changes in engine speed to help locate the leak.
What intake are you using?
-
09-26-2010, 05:38 AM #3
- Join Date
- Sep 2010
- Location
- oklahoma
- Posts
- 6
black- 87 monte ss
that was my guess to i got some carb cleaner last nite and that is what i am going to do toady.the intake is stock ls3
-
09-26-2010, 11:53 AM #4
- Join Date
- Sep 2010
- Location
- oklahoma
- Posts
- 6
black- 87 monte ss
i found out the problem. it was a stupid mistake on my part.it was the air intake setup we put on it.modified it somemore maf graph now looks great. car runs great.thanks cutlass
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
In need of ls1 motor
By Erider in forum Vehicles For Sale / TradeReplies: 0Last Post: 11-12-2013, 10:06 PM -
TKO to LS motor
By Orodi in forum Manual TransmissionReplies: 6Last Post: 02-06-2010, 05:27 PM -
New Motor or Not
By Thom in forum General HelpReplies: 13Last Post: 08-13-2009, 11:48 AM -
Z06 cam on 99 LS1 motor.
By vgrigorians in forum Firebird / WS6Replies: 3Last Post: 11-06-2007, 12:41 PM -
Need help pulling motor - broke motor at a road course event
By Doc99SS in forum General HelpReplies: 20Last Post: 08-24-2007, 05:57 PM
Bookmarks