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why does my 1996 ford f150 with 5.0 motor knock when it is cold

Sent to Car Experts February 04, 2006 12:36 a.m.

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Customer (name blocked for privacy)

Status: Closed Value: $20

Answer
February 04, 2006 12:39 a.m. (3 minutes and 8 seconds later)

ACCEPTED

Thanks for your question. Could be a number of things. Could be a oil pressure concern. Could be to heavy of an oil (wrong viscosity for the temp of the outside. Could be too much bearing wear. Could be a piston that is starting to scuff up.

Those are some of the things that can cause a knock cold.

Thanks

__________________
FORD MOTOR COMPANY CAR AND POWERSTROKE SPECIALIST FOR OVER 16 YEARS. ASE MASTER SINCE 1991. CURRENTLY WORK AT A MAJOR FORD DEALERSHIP. GIVE ME YOUR FORD PRODUCT QUESTIONS, IF I HELPED, PLEASE HIT THE ACCEPT BUTTON. EXPERTS QUESTIONS ON FORDS WELCOMED

Fordanswerman -- Auto Service Technician -- 98% Positive Feedback on 262 Car Accepts
Ford Engine Master/Transmission Master/Chassis Master=Ford Senior Master also Diesel 7.3/6.0

Reply
Sent February 06, 2006 7:18 p.m. (2 days and 18 hours later)

Relist: I still need help.
It did not answer my question yet

Customer (name blocked for privacy)

Reply
Sent February 06, 2006 7:22 p.m. (4 minutes and 31 seconds later)

My oil pressure is great,it has the correct oil in it,all new bearing and ring, rocker arms ,oil pump.Could the water line that runs thru the fuel injection just behind were the air cleaner hooks to have something to do wit it?It is bypaassed because it leaks water and put water in my oil when it is connected.And can you tell my why the water lines run thru there? Thank You Rick Hoskins

Customer (name blocked for privacy)

Info Request
February 06, 2006 7:52 p.m. (29 minutes and 40 seconds later)

Usually it is a piston knock. Either the wrist pin in the piston or the piston itself. Was the pistons replaced, or was it just the rings?

__________________
FORD MOTOR COMPANY CAR AND POWERSTROKE SPECIALIST FOR OVER 16 YEARS. ASE MASTER SINCE 1991. CURRENTLY WORK AT A MAJOR FORD DEALERSHIP. GIVE ME YOUR FORD PRODUCT QUESTIONS, IF I HELPED, PLEASE HIT THE ACCEPT BUTTON. EXPERTS QUESTIONS ON FORDS WELCOMED

Fordanswerman -- Auto Service Technician -- 98% Positive Feedback on 262 Car Accepts
Ford Engine Master/Transmission Master/Chassis Master=Ford Senior Master also Diesel 7.3/6.0

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