Question about 1992 Plymouth Sundance

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What do I do if I smell gasoline in the oil?

It's not a strong smell but it is there and sometimes I get white smoke from the exhaust.

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It is good that you have detected this problem. Gas in the oil is detrimental to the life of the engine. The oil is contaminated and probably thinned out.

But it will happen shortly again if you do not find the cause. Most likely you have fuel injectors that are leaking. A bleed-down test could confirm the problem if the integrity of the rest of the fuel system allows it. Sometimes fuel pressure is too high and beyond the ability of the injectors to close off completely.

Testing costs money and finding the 1 bad injector out of 4 or 6 cylinders is often more expensive than just replacing all of the injectors. You can try to remove sparkplugs after the engine has set overnight and see if one plug is wet. But the fuel may not run down on the sparkplug or you can have an intermittent problem and the engine seals just before testing and you miss it.

There are different injection systems and I am not familiar whether you have throttle body injection(one or two injectors) or the port injection for each cylinder. Some older Models could even pass Emissions with Carburetors. An internal leak in a Carburetor would give you the same problems.

You do need to get the bad oil out of the engine, but it will quickly be contaminated if you do not fix the cause. The white smoke can be moisture, but not necessarily from an engine defect; the new gasahol fuel attracts water.

Please rate my info. Check autoparts sites for pictures of your injectors. Autozone,Advance, Oreilys to name a few.

Posted on Nov 28, 2012

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  • fordexpert Nov 29, 2012

    You are welcome and Good Luck with your repair.

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Good Morning

First let me say this is probably not a huge deal. Long story short is that metal rings and valves are all that keeps the gas from mixing with the oil and as engines get older things leak a bit. The white smoke is probably a sign of oil getting past the rings, again in an older engine pretty normal.

As long as the engine runs well and isnt knocking so much you cant hear the radio I think you will be just fine. There are additives you can buy from your local autoparts store that sometimes reduce oil burning, STP was a big one in my day. Some people swear by these and others swear they do nothing... If you have an extra 10 bucks its worth a try.

Keep your oil changed and clean, keep your foot from slamming the accelerator to the floor, change your plugs more often (oil builds up on the spark plugs) and drive her till she pukes. If she is a 92 you are driving for free, might as well get every mile you can from her...

Best of luck
Jim

Posted on Nov 28, 2012

  • Lisa Bushman Nov 28, 2012

    Thank you so much for your help! Much appreciated!

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  • Plymouth Master
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Leaking fuel injectors,weak spark ignition.faulty coolant sensor, faulty oxygen sensor, bad sensor will cause ECM to enrichen fuel system cause gas contamination,best bet change oil and filter find fix problem contaminate oil with gas and coolant will thin out oil cause engine bearing failure.

Posted on Nov 28, 2012

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SOURCE: what does white smoke from exhaust mean?

YOU NEED TO OVERHOULIN THE ENGINE (PISTON RINGS, VALVE SEALS...)

Posted on Aug 13, 2009

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SOURCE: i just replaced the head in my 99 neon and i'm blowing white smoke from the exhaust. What's the problem

You are burning coolant, the head gasket can be put on Wrong, If your looking at the engine the right rear corner is the only oil passage for the head, you will see a difference in that corner of the head gasket. If your sure that the gasket is on right you may have a warped or cracked head or improper torqued head, all head bolts MUST be replaced when you do a new gasket cause the bolts stretch when torqued. The spec is 25, 50 then 50 then 1/4 turn for the bolt torque.. Make sure u start from the center of the head.

Posted on Jun 11, 2012

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