Just looking to see if anyone else can offer any insight on my problem.
To start I have an 06 automatic truck 150k miles. The truck has 351/475 twins and a smarty s06.
Recently i had the opportunity to swap out head studs, injectors, and a 85% over Industrial Injection CP3 from a friends truck that was going back to stock.
The injectors out of the other truck were lower mileage 125k(or so I thought) and had 90hp DDP tips. For ease we swapped the injectors complete as opposed to swapping tips. It appeared the the injectors in my truck were the newer bodied (might have been replaced before I owned) and his were the older style.
My truck defenitley picked up some power and overall runs pretty good but it has a very annoying engine vibration that I am unsure what the cause is.
The truck has a vibration than can be felt all through the truck only under a light throttle with a small load. As soon as i get out of the throttle, it dissapears. It can be felt from 45-53 or so mph and goes away as soon as it clicks overdrive and the rpm drops. It can again be felt around 65mph and is constant all the way up to 70-75mph. It seems to be more apparent when the converter is locked. It runs perfect under wide open thottle and heavy acceleration. It is much more noticeable when on an incline of any sort at cruising speeds and nearly goes away on any sort of decline.
It feels very similar to a driveline vibration but it never did this before the
Injector swap. The connector tubes were reused as were copper washer etc. Valves adjusted correctly
The only other notable things are the the truck does seem to run a little rougher when first started up in the cold and it does have a bit more of an injector rattle when first rolling into the throttle hard.
The confusing part is that my friends truck did not have this issue when the injectors were in his truck?
To start I have an 06 automatic truck 150k miles. The truck has 351/475 twins and a smarty s06.
Recently i had the opportunity to swap out head studs, injectors, and a 85% over Industrial Injection CP3 from a friends truck that was going back to stock.
The injectors out of the other truck were lower mileage 125k(or so I thought) and had 90hp DDP tips. For ease we swapped the injectors complete as opposed to swapping tips. It appeared the the injectors in my truck were the newer bodied (might have been replaced before I owned) and his were the older style.
My truck defenitley picked up some power and overall runs pretty good but it has a very annoying engine vibration that I am unsure what the cause is.
The truck has a vibration than can be felt all through the truck only under a light throttle with a small load. As soon as i get out of the throttle, it dissapears. It can be felt from 45-53 or so mph and goes away as soon as it clicks overdrive and the rpm drops. It can again be felt around 65mph and is constant all the way up to 70-75mph. It seems to be more apparent when the converter is locked. It runs perfect under wide open thottle and heavy acceleration. It is much more noticeable when on an incline of any sort at cruising speeds and nearly goes away on any sort of decline.
It feels very similar to a driveline vibration but it never did this before the
Injector swap. The connector tubes were reused as were copper washer etc. Valves adjusted correctly
The only other notable things are the the truck does seem to run a little rougher when first started up in the cold and it does have a bit more of an injector rattle when first rolling into the throttle hard.
The confusing part is that my friends truck did not have this issue when the injectors were in his truck?
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