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84LX89GT · 03-04-2004, 11:40 PM

If you let your engine idle and then when you give it throttle and there's smoke, it's probably worn valve guides. If it starts to smoke under load (like for example up hills) it's more likely piston rings. Also try putting in a thicker weight oil like 15w40 or 25W50, it will be thicker so it will take up clearances better (better oil pressure) and it doesn't leak near as fast - but that's only a temporary solution. It's probably worth your time to save up and buy an assembled long block and drive this engine till it starts to knock. Your engine with that mileage will more than likely need to be fully machined and rebuilt with most everything replaced anyway. Anything you do to this engine may only last temporarily and band aid the engine for a little while.
Good luck on whatever you decide.

03-04-2004, 11:40 PM	#5
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	If you let your engine idle and then when you give it throttle and there's smoke, it's probably worn valve guides. If it starts to smoke under load (like for example up hills) it's more likely piston rings. Also try putting in a thicker weight oil like 15w40 or 25W50, it will be thicker so it will take up clearances better (better oil pressure) and it doesn't leak near as fast - but that's only a temporary solution. It's probably worth your time to save up and buy an assembled long block and drive this engine till it starts to knock. Your engine with that mileage will more than likely need to be fully machined and rebuilt with most everything replaced anyway. Anything you do to this engine may only last temporarily and band aid the engine for a little while. Good luck on whatever you decide. __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)