idle problems - Page 2

88 supra turbo · 05-07-2009, 12:56 AM

The car starts smoking around 800 rpms and it is white smoke and alot of water coming from the exhaust but when you idle it up to 1000 rpm it stops smoking and the exhaust dries right up. What do you think.

dunewarz · 05-07-2009, 03:12 AM

Exhaust and muffler if new tend to have condensation (water vapors), it's okay to see some water come out of the tail pipe. The white smoke would mean it's a coolent problem. Have you checked your oil to make sure it's not milky? I can only think of three reasons why you would have white smoke coming out of your tail pipe. Head gasket going, coolent line connected wrong, or cracked or broken iscv.

I'd recheck the iscv and oil to make sure there's no problems there. Then check the coolent lines to make sure they are all connected to the correct place. There's a few manuals in the forums that show how the coolent lines go.

Hope you find the problem

88 supra turbo · 05-07-2009, 04:15 AM

I run synthetic oil in my car and I check it regular and no signs of milky oil. I will check the coolant lines and I will recheck my isc valve. The guy I bought the car off of sayed he rebuilt the motor and had put studs in place for the head. He told me about the notorious hg problem with the supras. I would like to rule out the hg being bad but you never know. Any help would be great. When it idles at 800 rpm the water is bad inside the exhaust but at 1000 rpm idling it dries up and does not smoke.

frostburn · 03-11-2010, 07:33 PM

im sorry to be the one to tell you this... but that happened to me aswell... and it was right after doing a 3 layer MHG job on the car i did it all myself brought the block and head to be surfaced and all that good stuff and when the car was all together it started doing that so i drobve it for a few months and that just made it worse... i brought it to my machanic and he took a look at it and it turns out the pressure from the first start cracked my MHG and caused all of that bs your going through. SORRY AND GOOD LUCK!!

Caleb · 03-13-2010, 03:43 AM

the only water is getting into your exhaust if from the head. anywhere else it would have evaporated before it got out. i'm afraid the last guy is right. it's likely not a bhg because of the head studs, so it must be a crack somewhere. not a good thing unfortunately...sorry man

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05-07-2009, 12:56 AM	#11
88 supra turbo Stock Join Date: Apr 2009 Location: va Posts: 14	The car starts smoking around 800 rpms and it is white smoke and alot of water coming from the exhaust but when you idle it up to 1000 rpm it stops smoking and the exhaust dries right up. What do you think.

05-07-2009, 03:12 AM	#12
dunewarz 3" Exhaust Join Date: May 2009 Location: WhiteBear Posts: 54	Exhaust and muffler if new tend to have condensation (water vapors), it's okay to see some water come out of the tail pipe. The white smoke would mean it's a coolent problem. Have you checked your oil to make sure it's not milky? I can only think of three reasons why you would have white smoke coming out of your tail pipe. Head gasket going, coolent line connected wrong, or cracked or broken iscv. I'd recheck the iscv and oil to make sure there's no problems there. Then check the coolent lines to make sure they are all connected to the correct place. There's a few manuals in the forums that show how the coolent lines go. Hope you find the problem

05-07-2009, 04:15 AM	#13
88 supra turbo Stock Join Date: Apr 2009 Location: va Posts: 14	I run synthetic oil in my car and I check it regular and no signs of milky oil. I will check the coolant lines and I will recheck my isc valve. The guy I bought the car off of sayed he rebuilt the motor and had put studs in place for the head. He told me about the notorious hg problem with the supras. I would like to rule out the hg being bad but you never know. Any help would be great. When it idles at 800 rpm the water is bad inside the exhaust but at 1000 rpm idling it dries up and does not smoke.

03-11-2010, 07:33 PM	#14
frostburn 3" Exhaust Join Date: Jun 2006 Location: ontario CA Posts: 128	im sorry to be the one to tell you this... but that happened to me aswell... and it was right after doing a 3 layer MHG job on the car i did it all myself brought the block and head to be surfaced and all that good stuff and when the car was all together it started doing that so i drobve it for a few months and that just made it worse... i brought it to my machanic and he took a look at it and it turns out the pressure from the first start cracked my MHG and caused all of that bs your going through. SORRY AND GOOD LUCK!!

03-13-2010, 03:43 AM	#15
Caleb Stock Join Date: Mar 2010 Location: Surprise, AZ Posts: 4	the only water is getting into your exhaust if from the head. anywhere else it would have evaporated before it got out. i'm afraid the last guy is right. it's likely not a bhg because of the head studs, so it must be a crack somewhere. not a good thing unfortunately...sorry man