2000 Ford Mustang, 3.0L V6 engine - I am having a "valve job" done, due to a large oil leak through one of the valve guides. The mechanic who took the heads off (to send them to a machine shop for the actual work) says the Piston to Cylinder clearance is too big, and I should replace the engine - though prior to removing the heads all six cylinders compression tested at 175PSI. He has not yet gotten in there with a feeler gauge and actually measured the gap, but I have told him I'm not buying an engine until he does.
2006-09-26 06:33:18 · 2 answers · asked by Ohari1 3 in Cars & Transportation ➔ Maintenance & Repairs
You cant measure the wear from the top with pistons and rings installed.check for a ridge in the top of the bore and piston wobble.
2006-09-26 08:00:33 · answer #1 · answered by frank m 5 · 0⤊ 0⤋
Tell him to do the head job for you, and you don't want to take it up the **** for a new motor. He's smoking crack.
As someone else posted, you can't tell by the top of the piston. If compression was good, you are good to go.
2006-09-26 15:36:03 · answer #2 · answered by Anonymous · 0⤊ 0⤋