7.3 engine vibration
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7.3 engine vibration
I have a 2000 7.3 Power Stroke turbo diesel. I am having an issue with engine vibration. The engine starts and runs fine. When at idle in park I have a some engine vibration. When in drive I only have engine vibration at the low end of each gear as the transminsion shifts. When it finally goes into overdirve and the engine RPM's fall the engine vibrates to the point it almost feels like a shutter. I have changed the air filter and fuel filter. I have replaced the diesle in the tank and I have run injector cleaner through it. Any suggestions????
Cargo Master
Joined: Apr 2010
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You may have a sticky injector or two. I am amazed how well these engines will run on 7 cylinders. You can try a little dose of Prolong engine treatment. Unscrew the plug on top of your HPOP and drop a couple ounces in, then run the truck around the block. You may want to repeat 2-3 times.
That is the cheap and easy solution. It gets technical and expensive from there. You will want a compression test and a cylinder contribution test to see if you have any dead cylinders.
That is the cheap and easy solution. It gets technical and expensive from there. You will want a compression test and a cylinder contribution test to see if you have any dead cylinders.
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The oil is changed on 5k to 7k basis with premium oil and filter. It currently has 78,000 miles on it. I thought I had bad fuel in it origionaly because it sits around alot. That is why I changed fuel out and replaced fuel filter. I thought that maybe and injector was dirty because it only shakes on low RPMs. While it is vibrating real bad in drive if you slip it into Neutral and rev the engine every bit of engine vibration goes away.
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From: gulfport
Well I'm having same problem first there way to many variables.
First u could have a bad injector
2 check ur under valve cover harness including ur connection (50 cent mod)
and for the best way go buy urself a diesel compression tester gauge find the cyclinder pressure on all cylinders be looking for one with low compression.
my vibration would shake the change out of the tray and it only happens between 1150-1750 rpms
answer is u have a cylinder out
or a bad injector
first two are not to hard and mid/low expensive however cracked piston or head etc. Highly expensive
best of luck and ill stay tuned
First u could have a bad injector
2 check ur under valve cover harness including ur connection (50 cent mod)
and for the best way go buy urself a diesel compression tester gauge find the cyclinder pressure on all cylinders be looking for one with low compression.
my vibration would shake the change out of the tray and it only happens between 1150-1750 rpms
answer is u have a cylinder out
or a bad injector
first two are not to hard and mid/low expensive however cracked piston or head etc. Highly expensive
best of luck and ill stay tuned
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I have tried a # of different injector cleaners and lubricants. I have still not fixed the problem. I have noticed that if I accelerate hard that I don't have any issues. If I very gradually accelerate than the problem is 10 times worse. Motor cranks and runs with no issues, even in the cold.
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From: Puget Sound
The bugger of these injectors: They can work less than the others, but still be working. The easiest way to pin it down is a Cylinder Contribution Test. I had to do that to find #7 giving me grief, then I moved the injector to #2 to confirm. I replaced the stick and that took care of the issue.
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