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Wayne
Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 9629
Experience:  worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
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12.7 Detroit diesel just inframed with reman head. Six reliabilt

Customer Question

12.7 Detroit diesel just inframed with reman head. Six reliabilt injectors. New turbo. fuel transfer pump, (old one leaking), new injector harness.heavy white smoke when under heavy fuel demand, will not pull runs very rough under load
Submitted: 2 years ago.
Category: Medium and Heavy Trucks
Expert:  Wayne replied 2 years ago.
Hi i'm Wayne
I will help you with this
This is a very common problem after injectors replaced
what happens is a O-Ring gs rolled when installing,
and you don't know it
then the engine will start a miss run rough, and pour out white smoke,
reason being the injector is dribbling instead of a mist
I suggest you pull injectors and check o-rings
If this helped you, Please rate my answer If
If Not, Please USE REPLY BUTTON FOR MORE INFO
Expert:  Wayne replied 2 years ago.
Hi I'm Just following up with you
did my answer help you
Let me know
Wayne
Customer: replied 2 years ago.
Checked injector deals on misfiring cyl. All good. May have PAC brake problem
Will inform u when I have definitive answer.
Expert:  Wayne replied 2 years ago.
OK, Let me know
Customer: replied 2 years ago.
Will do
Expert:  Wayne replied 2 years ago.
OK,
I have to respond when every you do, locks the question to me
Customer: replied 2 years ago.
Found ex valve leaking on #6 cyl. Removing head to determine why the failure
Expert:  Wayne replied 2 years ago.
Hi Thank you for that
keep me posted
Wayne
Customer: replied 2 years ago.
Found apparent over fuel situation on cylinder 1. One ex. Valve on 6 I would say set too tight bent valve head just enough to not seat but destroyed nothing.
Expert:  Wayne replied 2 years ago.
HI
Glad no damage,
good luck on your repair