General Tech Help Good at troubleshooting? Have a non specific issue? Discuss general tech topics here.

Slight Noise in CMFI 4.3

Old 08-06-2006, 01:08 AM
Thread Starter
Join Date: Dec 2005
Posts: 4
92ChevyBlazer is an unknown quantity at this point
Default Slight Noise in CMFI 4.3

First off the vehicle is a 1995 S10 pickup but I'm posting this because its the best board Ive found and its the same driveline. The 4.3 has a 115000 miles on it and it emits a rather quiet popping sound. The noise occurs if u rev the truck to 1800 in park but it is the worst right as the revs start to increase and when the rpms return to idle. The noise also occurs whenever the a load is put on the engine. The motor still sits in at 200 degrees and has plenty of power. Ive checked the valvetrain and nothing there appears to be causing the problem. and I plan on checking the timing chain next but i was wondering if anyone had any input before i do all that work. I also talked to two mechanics about the issue and one said it was wrist pins? and the other said just drive it.
Old 08-06-2006, 03:59 PM
Join Date: Feb 2006
Posts: 15
Nations81 is an unknown quantity at this point
Default RE: Slight Noise in CMFI 4.3

Not sure what the problem could be but try Lucas' oil substitute. replace a court of oil with that next oil change it might free stuck parts or cause them to slide arould smoother in the engine.
Related Topics
Thread Starter
Last Post
Engine & Transmission
02-15-2010 05:42 PM
Engine & Transmission
01-15-2010 08:50 AM
General Chat
04-13-2007 08:11 AM
General Tech Help
06-22-2006 08:13 PM
Mr. Chevy
1st Gen S-series (1983-1994) Tech
04-21-2006 11:46 AM

Thread Tools
Search this Thread
Quick Reply: Slight Noise in CMFI 4.3

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.