305 misfiring
August 31st, 2009, 3:13 PM
#1
CF Beginner
Thread Starter
Join Date: Aug 2009
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
305 misfiring
ive already changed out the spark plugs and spark plug wires i know the carburator is not adjusted right because its too rich and ive tried adjusting it but i couldnt find the right spot so would all of that cause a misfire? if so wat can i do? 
August 31st, 2009, 6:15 PM
#2
Super Moderator
ROTM Coordinator
ROTM Coordinator
Welcome, It could be a bad coil/loose wiring or the timing is off. But if you say your carb is not adjusted right it can be that too. Is this a project vehicle or a stock vehicle?
Last edited by Mike Sigmond; August 31st, 2009 at 6:19 PM.
September 1st, 2009, 9:51 AM
#3
Need a little help here, new engine? High mileage engine? Year? Standard ignition for said year or retrofit/upgrade?
Type of carb? Is it stock, replacement or performance upgrade?
Assuming it's a Rochester 2 barrel, try closing the two carb adjustment screws gently, then backing them off 2 1/4 turns. That should put you in the ballpark for normal fuel flow.
Have you pulled the valve covers and looked at the pushrods and rocker adjustment? Sounds like you could have a couple bent pushrods or collapsed lifters.
Type of carb? Is it stock, replacement or performance upgrade?
Assuming it's a Rochester 2 barrel, try closing the two carb adjustment screws gently, then backing them off 2 1/4 turns. That should put you in the ballpark for normal fuel flow.
Have you pulled the valve covers and looked at the pushrods and rocker adjustment? Sounds like you could have a couple bent pushrods or collapsed lifters.
Last edited by therewolf; September 1st, 2009 at 9:58 AM.
Thread
Thread Starter
Forum
Replies
Last Post
hawk265
Silverado & Fullsize Pick-ups
4
September 27th, 2006 3:07 PM
