I need sum motor help

Okay hey guy's, my friend has a 91 Talon, wit the 4g63 n/a motor, now we checked the compression on all the spark plug's, and on spark plug number 3 it had low compression, so if yall can help me on dis, is there sumthing i can buy like a fluid, or anything would help.

:eek:



How about using real words instead of "sum" and "dis"...




And no there are no fluids to fix compression problems. It could be a bent valve, the piston rings are bad, or the cylinder is getting flooded... Probably some other possibilities too but it would have to be looked at by somebody who knows what they are looking for. How bad was the compression in cylinder 3?

Well sorry, i was just trying to make a long sentence short. The compession was like 67 around there.

Well sorry, i was just trying to make a long sentence short. The compession was like 67 around there.
Wow... What did the sparkplug look like when you pulled it out?

Pretty Bad lol all the rest had good compression except one, But i bought some drop in fit valves all 16 of them. Is it bad if u drive becuse he drive's it and i told him it's bad if u drive it.

Pretty Bad lol all the rest had good compression except one, But i bought some drop in fit valves all 16 of them. Is it bad if u drive becuse he drive's it and i told him it's bad if u drive it.
Well if the compression is that low and he is driving it, all he's gonna do is fuck it up worse... I'd take and put a new plug in it and make sure its getting spark before you put it back in. Then make sure your injector is working properly. Those would be the two cheapest and quickest checks before doing anything major like new valves or piston rings... Hell it could end up being something else entirely... Maybe somebody else will hop in this thread and throw out some more ideas? The 6 bolt motor I bought had bad compression in cylinder 3 also... I wonder if there is a similar problem with all of them that causes it...

Pretty Bad lol all the rest had good compression except one, But i bought some drop in fit valves all 16 of them. Is it bad if u drive becuse he drive's it and i told him it's bad if u drive it.

He can drive it, but it will run like shit.

Yea I get what u mean, i mean everything esle works fine the injector's, the plugs, he just put new spark plugs and wires. He's driven like that for a while, and it's just the same no worse, no better lol.

Lots of miles on the motor?

It has 100,10 miles

The rings could be wore out...

put a capful of oil in the cylinder and see if compression goes up.