Smoking from rear of engine
04-02-07, 11:32 PM
#1
Lexus Test Driver
Thread Starter
Smoking from rear of engine
Well it just happened today, but after a cool 15 minute run at 95-110mph tailing a rabbit and pulling off at an exit ramp, the car (91 LS400 w/164k miles) stalls itself out, start it back up and cant keep it on unless constant gas is kept on it.
Pull it into a parking lot and let it shut itself off, notice smoke coming from under hood and look at the temperature gauge, which is at half, as usual.
Popping open the hood the smoke is more plentiful and i notice it's coming from the rear, then noticed the coolant reservoir is close to empty so i pour a bit of coolant into it.
Start the engine back up and keep my foot on the gas for a minute so it doesnt die out, finally i get my foot off it and it idles really low (350-400) for a couple seconds and then jumps to 1000 for a couple more seconds, then balances out at 600 as it's always normally been.
Running the engine for a couple miles decide to check on it, so pop open the hood and it's smoking from rear again, and coolant reservoir is a little emptier than left previously, so i fill it back up and at this point i am worried.
Anyway, the engine's been running very smooth and quiet with little to no power loss, but it's still smoking from the rear when the engine is cut off, and most recently tonight when i was parking and the engine was on, idle was normal and i start seeing that smoke again which i found odd because the engine was still on...Any help/suggestions out there?
I've been told a couple things by different people today about it, one said the rear main seal, one said the spark plugs were fouled and need to be replaced.
Pull it into a parking lot and let it shut itself off, notice smoke coming from under hood and look at the temperature gauge, which is at half, as usual.
Popping open the hood the smoke is more plentiful and i notice it's coming from the rear, then noticed the coolant reservoir is close to empty so i pour a bit of coolant into it.
Start the engine back up and keep my foot on the gas for a minute so it doesnt die out, finally i get my foot off it and it idles really low (350-400) for a couple seconds and then jumps to 1000 for a couple more seconds, then balances out at 600 as it's always normally been.
Running the engine for a couple miles decide to check on it, so pop open the hood and it's smoking from rear again, and coolant reservoir is a little emptier than left previously, so i fill it back up and at this point i am worried.
Anyway, the engine's been running very smooth and quiet with little to no power loss, but it's still smoking from the rear when the engine is cut off, and most recently tonight when i was parking and the engine was on, idle was normal and i start seeing that smoke again which i found odd because the engine was still on...Any help/suggestions out there?
I've been told a couple things by different people today about it, one said the rear main seal, one said the spark plugs were fouled and need to be replaced.
04-02-07, 11:38 PM
#2
Well it just happened today, but after a cool 15 minute run at 95-110mph tailing a rabbit and pulling off at an exit ramp, the car (91 LS400 w/164k miles) stalls itself out, start it back up and cant keep it on unless constant gas is kept on it.
Pull it into a parking lot and let it shut itself off, notice smoke coming from under hood and look at the temperature gauge, which is at half, as usual.
Popping open the hood the smoke is more plentiful and i notice it's coming from the rear, then noticed the coolant reservoir is close to empty so i pour a bit of coolant into it.
Start the engine back up and keep my foot on the gas for a minute so it doesnt die out, finally i get my foot off it and it idles really low (350-400) for a couple seconds and then jumps to 1000 for a couple more seconds, then balances out at 600 as it's always normally been.
Running the engine for a couple miles decide to check on it, so pop open the hood and it's smoking from rear again, and coolant reservoir is a little emptier than left previously, so i fill it back up and at this point i am worried.
Anyway, the engine's been running very smooth and quiet with little to no power loss, but it's still smoking from the rear when the engine is cut off, and most recently tonight when i was parking and the engine was on, idle was normal and i start seeing that smoke again which i found odd because the engine was still on...Any help/suggestions out there?
I've been told a couple things by different people today about it, one said the rear main seal, one said the spark plugs were fouled and need to be replaced.
Pull it into a parking lot and let it shut itself off, notice smoke coming from under hood and look at the temperature gauge, which is at half, as usual.
Popping open the hood the smoke is more plentiful and i notice it's coming from the rear, then noticed the coolant reservoir is close to empty so i pour a bit of coolant into it.
Start the engine back up and keep my foot on the gas for a minute so it doesnt die out, finally i get my foot off it and it idles really low (350-400) for a couple seconds and then jumps to 1000 for a couple more seconds, then balances out at 600 as it's always normally been.
Running the engine for a couple miles decide to check on it, so pop open the hood and it's smoking from rear again, and coolant reservoir is a little emptier than left previously, so i fill it back up and at this point i am worried.
Anyway, the engine's been running very smooth and quiet with little to no power loss, but it's still smoking from the rear when the engine is cut off, and most recently tonight when i was parking and the engine was on, idle was normal and i start seeing that smoke again which i found odd because the engine was still on...Any help/suggestions out there?
I've been told a couple things by different people today about it, one said the rear main seal, one said the spark plugs were fouled and need to be replaced.
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