Is this the Head Gasket?

90' LX 5.0 · Sep 11, 2005

So i just bought another mustang... 1991 5.0 hatchback AOD...

In the upper RPM range it pings and sputters a little... my mom said that it blew a puff of white smoke out the exhaust when i got on it... the guy i bought it from said that he put cheap gas in it so that it just needed to be tuned up and run with better gas... so the only thing that worries me is the puff of white smoke...

Does it sound like the head gasket?

Repostyle · Sep 11, 2005

I'm not a professional mechanic or anything and please correct me if I'm wrong, but as far as I know, blue smoke is too much gas, black is oil, and white is water, so it does sound like a blown gasket, check your oil for a kind of milky foamy look, if it is, it's mixing with water and is most likely the gasket.

jstang209 · Sep 11, 2005

run some good radiator sealant through it and see if it helps any.

Daggar · Sep 11, 2005

90' LX 5.0 said:
So i just bought another mustang... 1991 5.0 hatchback AOD...

In the upper RPM range it pings and sputters a little... my mom said that it blew a puff of white smoke out the exhaust when i got on it... the guy i bought it from said that he put cheap gas in it so that it just needed to be tuned up and run with better gas... so the only thing that worries me is the puff of white smoke...

Does it sound like the head gasket?

How long was the car sitting before you bought and drove it?

1991_5.0_vert · Sep 11, 2005

If it's pinging in the upper RPMs you may need to retard your timing, especially if he's run crappy gas. Before you do that though run some premium through it and see if it helps with the pinging.

Daggar · Sep 11, 2005

If it IS crappy gas, don't add new gas to it! Put some gas dryer in the tank and run it down quite a bit before putting new gas in it.

TheUser · Sep 11, 2005

Repostyle said:
I'm not a professional mechanic or anything and please correct me if I'm wrong, but as far as I know, blue smoke is too much gas, black is oil, and white is water, so it does sound like a blown gasket, check your oil for a kind of milky foamy look, if it is, it's mixing with water and is most likely the gasket.

blue means burning oil; black means too much gas (running rich), and white is water

Shadrack · Sep 11, 2005

Carney Woods · Sep 11, 2005

Daggar said:
How long was the car sitting before you bought and drove it?

If it's been sitting awhile you will get some smoke out of it. Every year when the car comes out of storage there is some smoke for a few miles.

kornchild4life · Sep 11, 2005

If your head gasket was shot there wouldn't have been just a puff of white smoke coming out. I'm in the middle of changing a set of head gaskets in my dad's van and when that thing was started up all that was coming out was white smoke and it was a huge cloud But like what was stated get dry gas and redo your timing and see if the pinging goes away

red92gtstang · Sep 11, 2005

Sounds like a headgasket to me. Or maybe the valve seals.

bc86fiveoh · Sep 11, 2005

Every headgasket that I've dealt with, the vehicle steadily puffed white smoke, not just a "puff".

mondos90lx · Sep 11, 2005

Is this the Head Gasket?

90' LX 5.0

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