Loose injector bolt 2003 5.9
#1
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Loose injector bolt 2003 5.9
My son's 2003 3500 5.9 had a knock in it. After checking this forum, I decided it was injector knock. At cold start up there was no knock. After a few minutes it would start. The truck did not loose any power and ran fine. There was a lot of black smoke, with no signs of fuel in the exhaust. I pulled the wires off each injector one at a time, and when I did #5 the knock stopped. When I went to pull the injector I found one of the hold down bolts was loose. Should I try torqeing it back down 1st, or go ahead and pull it for inspection?
#2
Registered User
Install fuel injector hold down clamp and hold
down bolts. Alternately tighten clamp bolts to 10 N·m
(89 in. lbs.) torque.
#4
DTR 1st Sergeant
^^^ That is normal. The hold down is a "rocker" style. When you loosen one side the other will be loose too. When tightening up again, ensure you do it evenly alternating between the two bolts as described above.
Also, the electric leads on the top of the injector solenoid take very little torque. DO NOT OVERTIGHTEN... or you will be cursing over the cost of a new injector.
Also, the electric leads on the top of the injector solenoid take very little torque. DO NOT OVERTIGHTEN... or you will be cursing over the cost of a new injector.
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