Sweet smell?
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Sweet smell?
Hey guys, lately, and since i bought my truck, i have noticed a sweet smell coming from the exhaust, i have changed the motor, and still notice it a bit, sometimes more than others. i have never smelt burning prestone so i dont know if its that, and also my truck never overheats, or never goes over half for that matter, i never have to add prestone, and it never smokes. so what could it be, its a smell thats hard to describe, but noticeable. any one else experienced this? i do have leaky cam and crank seals i believe.
92 pickup
4x4
3.0l
thanks for any input.
92 pickup
4x4
3.0l
thanks for any input.
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More than likely antifreeze. Time to do a compression/leakdown test.
Edit: It doesn't have to run hot to be a headgasket. Not yet, anyway. If you have a tiny leak from the water jacket to the combustion chamber, it will burn only a few drops (enough to smell sweet) without looking low or causing overheating. A tiny leak leads to a big leak which leads to a ruined engine if you don't catch it quick, so I would check it out as soon as possible.
Get a borescope and look down in the combustion chambers. If they're shiny (ie - no carbon on the piston tops or valves), you have a coolant leak into the chamber.
Edit: It doesn't have to run hot to be a headgasket. Not yet, anyway. If you have a tiny leak from the water jacket to the combustion chamber, it will burn only a few drops (enough to smell sweet) without looking low or causing overheating. A tiny leak leads to a big leak which leads to a ruined engine if you don't catch it quick, so I would check it out as soon as possible.
Get a borescope and look down in the combustion chambers. If they're shiny (ie - no carbon on the piston tops or valves), you have a coolant leak into the chamber.
Last edited by Crawdad; 05-30-2008 at 04:38 PM.
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https://www.yotatech.com/forums/f116...-parts-146181/
I recently had a good experince with the local toy dealership
I recently had a good experince with the local toy dealership
#10
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yeah but it might no be the head gasket sometimes a little gets through.
you have a tiny leak from the water jacket to the combustion chamber, it will burn only a few drops (enough to smell sweet) without looking low or causing overheating. A tiny leak leads to a big leak which leads to a ruined engine if you don't catch it quick, so I would check it out as soon as possible.
as the previous postered said..
IT MIGHT BE NOTHING!!
you have a tiny leak from the water jacket to the combustion chamber, it will burn only a few drops (enough to smell sweet) without looking low or causing overheating. A tiny leak leads to a big leak which leads to a ruined engine if you don't catch it quick, so I would check it out as soon as possible.
as the previous postered said..
IT MIGHT BE NOTHING!!
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has anyone ever heard of or used that "heal a seal" stuff that is supposed to fix any internal leaks? maybe some of that would stop mine, since its such a small leak?
heres the site.
http://www.heal-a-seal.com/
heres the site.
http://www.heal-a-seal.com/
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yeah.. dont worry too much but i would check the compression.. did you say this was a rebuild engine??
i have a 4runner i got from a guy at work 22re and i still dont trust the rebuild he had and i always have thoughts about putting insurance back on the trail rig!! even though its gutted and ugly...and my dd is a bueat
i have a 4runner i got from a guy at work 22re and i still dont trust the rebuild he had and i always have thoughts about putting insurance back on the trail rig!! even though its gutted and ugly...and my dd is a bueat
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yeah.. dont worry too much but i would check the compression.. did you say this was a rebuild engine??
i have a 4runner i got from a guy at work 22re and i still dont trust the rebuild he had and i always have thoughts about putting insurance back on the trail rig!! even though its gutted and ugly...and my dd is a bueat
i have a 4runner i got from a guy at work 22re and i still dont trust the rebuild he had and i always have thoughts about putting insurance back on the trail rig!! even though its gutted and ugly...and my dd is a bueat
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