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Very rough start and lots of white smoke comes out. Topic is solved

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
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1997 - 2000 V70-XC
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jking4020
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Re: Very rough start and lots of white smoke comes out.

Post by jking4020 » Thu Jul 21, 2016 7:46 pm

Did compression test. 150-140 psi. I wonder if the turbo is blown. Its not nearly as quick as it used to be. And the more throttle I give it, the more smoke comes out.

scot850
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Re: Very rough start and lots of white smoke comes out.

Post by scot850 » Thu Jul 21, 2016 11:07 pm

It might be time to talk to a turbo repair shop and ask their advice.

Neil.
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Re: Very rough start and lots of white smoke comes out.

Post by MadeInJapan » Fri Jul 22, 2016 12:42 am

Wait a minute- were the codes not pulled?
'98 S70 T5 Emrld Grn Met/Beige Tons of Upgrades Mobil-1
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'07 S40 T5 AWD 6 speed manual! Silver/Black Stage1 Heico & Elevate
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Re: Very rough start and lots of white smoke comes out.

Post by jking4020 » Wed Jul 27, 2016 8:28 pm

Haven't checked codes yet. But did do vent check and a glove over oil fill cap will still fill with air and smoke comes out of dipstick. If pcv system is clean do I need to take off the pan and see if it's clogged in there? I'm broke, busy, and tired. Need this car to stay running.

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Re: Very rough start and lots of white smoke comes out.

Post by Sommerfeldt » Thu Jul 28, 2016 3:36 am

jking4020 wrote:I'm broke, busy, and tired.
At least you found the right place to find help with keeping the car running without throwing thousands of bucks on shops and mechanics. :)
Are you sure the PCV hoses are routed correctly? Codes would be the next step in any case, but Neil is probably right - might be time to take a look at that turbo.

- S
'96 855 T5, R bumper and spoiler, Koni Yellows & blue H&R springs all 'round.

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Re: Very rough start and lots of white smoke comes out.

Post by abscate » Thu Jul 28, 2016 4:42 am

jking4020 wrote:Haven't checked codes yet. But did do vent check and a glove over oil fill cap will still fill with air and smoke comes out of dipstick. If pcv system is clean do I need to take off the pan and see if it's clogged in there? I'm broke, busy, and tired. Need this car to stay running.

Explains all. Your are burning oil from excess crank pressure. The turbos on these cars rarely fail. They are amazing.

I would drop the pan and check the gallery port or try cleaning it with the " ram the tube in" method without dropping the pan
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Re: Very rough start and lots of white smoke comes out.

Post by Sommerfeldt » Thu Jul 28, 2016 8:07 am

abscate wrote:Explains all. Your are burning oil from excess crank pressure. The turbos on these cars rarely fail. They are amazing.
No doubt true, but what about the white smoke OP reports? I'd think that was water - or coolant, rather? Wouldn't it be bluer if it was mostly oil?

- S
'96 855 T5, R bumper and spoiler, Koni Yellows & blue H&R springs all 'round.

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Re: Very rough start and lots of white smoke comes out.

Post by jking4020 » Tue Aug 09, 2016 6:44 pm

Sorry for late replies. I'm grateful for this site. Code is 0103 which I found is a maf code. Will try cleaning sensor this weekend. I'll do the ram method this weekend too. Gonna pull engine apart again. And yes the pcv hoses are all correctly hooked up. I Double check things before I put stuff back together. I love working on cars and this was a much easier job than I thought it would be.
You guys kick ass! Thanx.

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Re: Very rough start and lots of white smoke comes out.

Post by abscate » Tue Aug 09, 2016 7:57 pm

It's a MAF code with about a 33% chance of the MAF being the fault. Codes guide you in diagnosis, but they don't tell you the bad part very often
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Re: Very rough start and lots of white smoke comes out.

Post by jking4020 » Sat Aug 13, 2016 5:17 pm

Cleaned maf with spray and no change. Have turbo exposed now and it moves fine with a flick of the finger. Next I'm gonna try" ram the tube in" method at block ports of pcv holes in lower block. Change oil. Hope for a damn miracle.

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