Bad injector cup
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Elder User
Joined: May 2011
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From: Elyria, Ohio
Bad injector cup
I drove from school wvu back home today and the truck ran fine. i hopped in it later that night and it was pouring out white smoke even though the truck was still warm the whole way pouring out smoke. i did a little bit of searching and it sounds like a bad injector cup. It doesnt run ruff or loss in power but there is a change in the sound from the exhaust. I also saw that if you smell sweet exhaust that means coolant. What else could cause this? also what could i test to determine this is the issue?
Thanks in advance guys.
Thanks in advance guys.
Lead Driver
Joined: Mar 2006
Posts: 5,098
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From: western SD
On my brothers 7.3 Superduty, when it started spewing white smoke with no loss of power it was a bad injector, or that is what the dealership said. LOL Anyway they replaced 1 injector and it was good to go. Do you have a way to do a buzz test and a cylinder contribution test? I was told that a cracked injector cup results with fuel in the coolant.
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Elder User
Joined: May 2011
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From: Elyria, Ohio
My buddy may or may not still have his cool guy scanner. IWould I be able to see fuel in like the coolant reservoir if it is a cracked sleeve.
Truck has 311,000 I believe I have one replaced injector. When I did o rings last year I had a newer black top colored injector.
Truck has 311,000 I believe I have one replaced injector. When I did o rings last year I had a newer black top colored injector.
Cargo Master
Joined: Nov 2009
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I have a very similar sounding problem... So far I have three bad glow plugs and plan to do the valve cover gaskets. I am hoping that the injectors are ok as I bought them in the last two years from Jim. I did a premium build at the time iirc
Last time I ran the truck was to move the trailer and turn it around to face the garage to start working. It smoked so much I could not see the back of the bed. It was white smoke. When I took the exhaust a part to fix a broken manifold bolt and up pipe there was a lot of unburnt fuel on everything. I started a thread "Most likely problem..."
I look forward to seeing what you come up with.
I do have a windshield leak and hope that I haven't got water in the IDM.
Last time I ran the truck was to move the trailer and turn it around to face the garage to start working. It smoked so much I could not see the back of the bed. It was white smoke. When I took the exhaust a part to fix a broken manifold bolt and up pipe there was a lot of unburnt fuel on everything. I started a thread "Most likely problem..."
I look forward to seeing what you come up with.
I do have a windshield leak and hope that I haven't got water in the IDM.
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Elder User
Joined: May 2011
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From: Elyria, Ohio
I tried taking out my chip to see if it did anything. but i had my buddy hook it up to his scanner. and after the buzz test it came in that injector 8 was the problem. You could tell by just hearing the buzzs. all the others were loud where #8 was quiet. So i ordered a new injector and it will be here tomorrow so ill see what happens when i put the new one in.
Also im going to do the ccv mod. Does anyone know the part number on the o rings for it ?
Also im going to do the ccv mod. Does anyone know the part number on the o rings for it ?
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Elder User
Joined: May 2011
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From: Elyria, Ohio
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Elder User
Joined: May 2011
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From: Elyria, Ohio
Well I got the injector and we ran another buzz test to make sure it was still #8. It buzzed fine like all the others. We let it run for a little to get all thr oil flow in through and ran another buzz it came with all injectors good. Right now im taking off the valve covers and gonna in plug each injector individually and see if we can find the messing up
Cargo Master
Joined: Nov 2009
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Well I got the injector and we ran another buzz test to make sure it was still #8. It buzzed fine like all the others. We let it run for a little to get all thr oil flow in through and ran another buzz it came with all injectors good. Right now im taking off the valve covers and gonna in plug each injector individually and see if we can find the messing up
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Elder User
Joined: May 2011
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From: Elyria, Ohio
Buzz checked fine. Then went through and unplugged each injector while having it running. Number 4 I believe wasn't doing anything when we pulled the it and put the new one in. It had no change. My buddy's scanner cant run a contribution test because it says my oil temp sensor is bad. But tomorrow a guy with a better scanner is gone try to clear that code and run a test.
Anyone think of anything I could try?
Anyone think of anything I could try?
