blue smoke - The 1947 - Present Chevrolet & GMC Truck Message Board Network

6768chevylover · 01-25-2018, 04:58 PM

I need a refresher, I have blue smoke after truck warms up, not during acceleration. That's a valve seal or guide issue right?

geezer#99 · 01-25-2018, 06:20 PM

Or intake gasket.

**mongocanfly** · 01-25-2018, 07:42 PM

initial start-up with a puff of blue smoke is usually valve seals

GRX · 01-26-2018, 10:33 AM

Rings. A leak down test may be in order.

Another thing to do is have a friend follow you and observe smoke when you let off the accelerator while in gear going down a hill.

6768chevylover · 01-30-2018, 05:31 PM

Would a leaking intake gasket cause oil loss as well?

geezer#99 · 01-30-2018, 05:34 PM

Quote:

Originally Posted by 6768chevylover

Would a leaking intake gasket cause oil loss as well?

Yes it would.

**mongocanfly** · 01-30-2018, 06:28 PM

leaking intake gasket+oil loss=blue smoke

01-25-2018, 04:58 PM	#1
6768chevylover Registered User Join Date: May 2007 Location: nepa Posts: 745	blue smoke I need a refresher, I have blue smoke after truck warms up, not during acceleration. That's a valve seal or guide issue right?

01-25-2018, 06:20 PM	#2
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,521	Re: blue smoke Or intake gasket.

01-25-2018, 07:42 PM	#3
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,594	Re: blue smoke initial start-up with a puff of blue smoke is usually valve seals __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver

01-26-2018, 10:33 AM	#4
GRX Registered User Join Date: Jul 2010 Location: MD Posts: 1,937	Re: blue smoke Rings. A leak down test may be in order. Another thing to do is have a friend follow you and observe smoke when you let off the accelerator while in gear going down a hill. __________________ 1969 c-10 Step Side Long Bed. I-6 250cid = = 1969 Pontiac GTO hard top. 400, 4-speed.

01-30-2018, 05:31 PM	#5
6768chevylover Registered User Join Date: May 2007 Location: nepa Posts: 745	Re: blue smoke Would a leaking intake gasket cause oil loss as well?

01-30-2018, 06:28 PM	#7
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,594	Re: blue smoke leaking intake gasket+oil loss=blue smoke __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver



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