Jump to content

2014 Silverado 1500 4.3 DI misfire

Richard D Dillon
 Share

Recommended Posts

Richard D Dillon New Member

Richard D Dillon

Posted
Posted

2014 Silverado 1500 2wd 4.3l DI. 150,000 miles. Fleet vehicle with decos oil changes every 4,000 miles. Came in with a misfire. Counters showed cyl 1. Replaced plugs and wires (Delco). No change. Looked at injector balance and seemed to have a bad #1 injector. Replaced 1,3, and 5 injectors (delco) and the 2 stainless under manifold fuel lines. No change. Removed 1 and 3 plugs compression seemed very low on cyl 1. Performed induction service (BG). No change. Re-performed compression test. Much better 210 psi but still running like crap. Pulled left valve cover and removed #1 cyl rockers to close valves. Performed leakdown test.  Only 5% leak at 100 psi. Help?!?

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing


×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.

  I accept