Engine 850: B5202S/2.0/10v: - White Smoke?

snakeeyes000 · Apr 10th, 2011, 18:07

Hi guys,

I have an S70 and recently did the intake valves in as the timing was out after redoing the cam cover as there was a leak.

I had the valves done and put a new head gasket on with new stretch bolts, And made sure it was all TDC.

But it now runs very badly and wont rev, And there is a load of white smoke, I think it might be oil coming straight through the exhaust, But i dont know why and dont know why there is no power and it wont idle.

I marked the HT leads so the firing is the same, So i am lost.

Any help would be appreciated.

John

Chopster · Apr 10th, 2011, 19:10

White smoke is usually water vapour, and seeing as you've recently had it in bits your bad idle could be an air leak on the intake side of things

snakeeyes000 · Apr 11th, 2011, 12:32

I have the RAC coming out to check it for me, I just have a horrible feeling its the exhaust valves, Ill just have to wait and see.

deathrider311271 · Apr 11th, 2011, 21:06

white smoke is water its possible u bought a bad head gasket, as for bad running i would say your timing is out, even tho u put marks on it what stopped the bottom pulley moving? is it ME7? if so u also will have variable valve timing

cheers

simon

snakeeyes000 · Apr 11th, 2011, 21:20

Not sure, The RAC guy said it wasnt running properly because i have a bad air leak in the intake manifold or one of thr pipes, Thats the first thing, He also said the smoke was the exhaust valves, I didnt think they had hit as there was no sign, But thats the problem, Dumping oil straight into the exhaust, So another 150 quid and that should be it.

I had the cams locked in so i know the timing on them is right, I didnt know there was a way to lock the crank, It was TDC before i put the head back on, I dont think i moved it putting the belt back on as it wasnt rumbling like the last time when i did the intake valves in.

Just have to get the exhaust valves done and try to find the air leak, Then she might be back on the road again, I HOPE.

Chopster · Apr 11th, 2011, 23:30

As Simon (deathrider) has mentioned if your car was manufactured from 98 on and has an electronic throttle (no cable) then it'll be a ME7 and they need setting up by someone who REALLY knows Volvo's as the variable valve timing is a right royal PITA to do

General guide to exhaust smoke colour:

White - water
Blue - oil
Grey/black - fuel

NB Just noticed yours is a 10 valve so not sure ME7 is relevant

snakeeyes000 · Apr 12th, 2011, 10:17

Its not it has a cable, But thanks for the thought, You had me worried for a few mins till i had a look, Just have to save up the money now and then back on the road.

Thanks for all the help.

snakeeyes000 · Apr 20th, 2011, 15:01

Found the air leak, Its just a hose at the end of the inlet manifold, Nice cheap fix.

Apr 10th, 2011, 18:07	#1
snakeeyes000 New S70 Owner Last Online: Jul 30th, 2011 11:00 Join Date: Jan 2011 Location: sittingbourne	White Smoke? Hi guys, I have an S70 and recently did the intake valves in as the timing was out after redoing the cam cover as there was a leak. I had the valves done and put a new head gasket on with new stretch bolts, And made sure it was all TDC. But it now runs very badly and wont rev, And there is a load of white smoke, I think it might be oil coming straight through the exhaust, But i dont know why and dont know why there is no power and it wont idle. I marked the HT leads so the firing is the same, So i am lost. Any help would be appreciated. John

Apr 10th, 2011, 19:10	#2
Chopster PITA Member Last Online: Sep 7th, 2018 08:26 Join Date: Feb 2010 Location: Aintree	White smoke is usually water vapour, and seeing as you've recently had it in bits your bad idle could be an air leak on the intake side of things __________________ Collecting Volvos

Apr 11th, 2011, 12:32	#3
snakeeyes000 New S70 Owner Last Online: Jul 30th, 2011 11:00 Join Date: Jan 2011 Location: sittingbourne	Thanks I have the RAC coming out to check it for me, I just have a horrible feeling its the exhaust valves, Ill just have to wait and see.

Apr 11th, 2011, 23:30	#6
Chopster PITA Member Last Online: Sep 7th, 2018 08:26 Join Date: Feb 2010 Location: Aintree	As Simon (deathrider) has mentioned if your car was manufactured from 98 on and has an electronic throttle (no cable) then it'll be a ME7 and they need setting up by someone who REALLY knows Volvo's as the variable valve timing is a right royal PITA to do General guide to exhaust smoke colour: White - water Blue - oil Grey/black - fuel NB Just noticed yours is a 10 valve so not sure ME7 is relevant __________________ Collecting Volvos Last edited by Chopster; Apr 11th, 2011 at 23:33.

Apr 11th, 2011, 21:06	#4
deathrider311271 I've Been Banned Last Online: Jun 21st, 2022 19:26 Join Date: Mar 2010 Location: Grimsby	white smoke is water its possible u bought a bad head gasket, as for bad running i would say your timing is out, even tho u put marks on it what stopped the bottom pulley moving? is it ME7? if so u also will have variable valve timing cheers simon

Apr 11th, 2011, 21:20	#5
snakeeyes000 New S70 Owner Last Online: Jul 30th, 2011 11:00 Join Date: Jan 2011 Location: sittingbourne	Not sure, The RAC guy said it wasnt running properly because i have a bad air leak in the intake manifold or one of thr pipes, Thats the first thing, He also said the smoke was the exhaust valves, I didnt think they had hit as there was no sign, But thats the problem, Dumping oil straight into the exhaust, So another 150 quid and that should be it. I had the cams locked in so i know the timing on them is right, I didnt know there was a way to lock the crank, It was TDC before i put the head back on, I dont think i moved it putting the belt back on as it wasnt rumbling like the last time when i did the intake valves in. Just have to get the exhaust valves done and try to find the air leak, Then she might be back on the road again, I HOPE.

Apr 12th, 2011, 10:17	#7
snakeeyes000 New S70 Owner Last Online: Jul 30th, 2011 11:00 Join Date: Jan 2011 Location: sittingbourne	Its not it has a cable, But thanks for the thought, You had me worried for a few mins till i had a look, Just have to save up the money now and then back on the road. Thanks for all the help.

Apr 20th, 2011, 15:01	#8
snakeeyes000 New S70 Owner Last Online: Jul 30th, 2011 11:00 Join Date: Jan 2011 Location: sittingbourne	Found the air leak, Its just a hose at the end of the inlet manifold, Nice cheap fix.

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