i have a 88 f-150 with a 302 that has been sugared,i got it all unlocked but the rods wont move in the piston,doies anybody know any tricks to free them up without a machine shop.thanks email me at lisa3152@att.net

 

I would pull all plugs. I would buy some Marvel Mystery Oil and using a funnel with a flexible thin hose, inject as much as possible in each plug hole.

Another thought is to remove the Plenum and pour MMO down each runner. You could also maybe use regular tranny oil, but MMO is cheaper. Perhaps pull the plenum, dump in MMO in each runner and also spray PB Blaster in each plug hole till it runs out of the hole.

Now for the next question...You got it unlocked..meaning you got all of it out of the fuel tank's, fuel lines, fuel return lines, fuel rail and the fuel injectors? Is this correct?

Perhaps you can give a beginning to the story of how you found out it has been "Sugared" and what happened next...All info would be crucial. Hopefully the pistons haven't siezed to the cylinder walls.

Hopefully this helps you some.

 

i purchased the truck for hiperformance.use it set up for a year,it had bad gas,so i took both tanks down and replaced them,put new gas in it,drove it 7 miles,no problems at all,next day i went to race a chevy truck and thge moter was locked,i broke it down completely it had black tar in the oil pan,i showed it to a machanic and he said it been surgered so i went home told my wife how he kmow that by just looking at it,so i stuck my finger in it and tasted it,it tasted sweet just like surger,any i got mostly all new parts but the piston and rods,and the wont move unless it is hot,thanks for the help so for

 

Sorry to hear that news...If the above tricks don't do it, it may be due for a trip to the machine shop. Worst part about it is that I'm sure all bearing's are ruined. I hate to know someone could stoop so low as to "Sugar" someone's engine..It's not just a fail to the person who drives it, but to the era these engines belong too.

 

the person i bought the truck from could have told me it was surgered,that would have save me a lot of troble and money,i wont buy nothen else from him,thanks for the help it helped o lot,i got the rods to move freely again,i put them on the stove and boiled them 3 at the time,and whil thay was hot and moving i oiled them real good,now thay move easy but not to easy,thay have no kind of free play dont wiggle at all

 

SOunds like the PO wife caught him messing around.

I'd put on a new tank replace all lines and completely tear down and clean the engine
Its the only way.

 

i changed both tanks flushed all lines with kerosine and cleaned injectors i got the moter tore apart now cleaning getting it ready to put back