Engine misfire? Odd vibration
#11
Thanks cummins guy! Read the whole post. I really plan on diving into the motor sometime and getting it balanced and so on... I hope I don't have valve issues right now. My motor does it the worst while cold and after I run it hard. It also does it in neutral at the stop light but not noticeable while in gear. I wonder sometimes while going down the road but the roads up here in alaska are bumpy due to frost heaves and such. As soon as I get some time off from work I am going to clean my injectors and have them pop tested. And does anybody know where to get some injector line clamps!!! Thanks
#12
#13
#14
Well my idle went up to almost 1000 rpm when the barrels where adjusted. So that helped hide the rough spot. I idled it back to 750 and it's still there though not as noticeable when warmed up. I'm cleaning my injectors next because it seems like an easy enough process and I believe they are the stock injectors and my truck has 245,000 miles. From reading about a consistant miss is it could be an injector, delivery valve, pump out of balance, low compression in a cylinder(s), burned or dirty valves.... I'm starting with the easy fixes first. There is a link posted on this thread that covers the diagnoses for a burned valve. As far as turning the barrels it did give my truck a noticable increase in power. Definately make passing easier
Last edited by SCHMITTY; 04-24-2012 at 10:57 AM.
#15
I just disassembled my stock injectors to give them a good cleaning and found that one of the springs was hanging up in the bore it sits in. I actually had to twist it out like a screw because the coils wore a groove in the metal. I carefully drilled it out and reassembled it. I'll have the truck ready to start tonight so I'll see if that fixed it.
#17
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