Fixing my son's Pontiac Montana - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Introductions for new members New to the Forum? Introduce yourself here. Been around awhile? Tell us about yourself. We at GMF Love to meet new Members! So pull up a chair and have a beverage.

Reply
 
 
 
Thread Tools Search this Thread
Old 06-25-2013, 09:05 PM   #11
Junior Member
Thread Starter
 
Join Date: Jun 2013
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
prey4surf2000 is on a distinguished road
Default

Do I need to use new cylinder head gaskets when I reassemble for the compression test? The new ones I took out left some flakes on the heads and block that I had to scrape off.
prey4surf2000 is offline   Reply With Quote
Old 06-25-2013, 09:34 PM   #12
Junior Member
Thread Starter
 
Join Date: Jun 2013
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
prey4surf2000 is on a distinguished road
Default

When I drained the oil the second time it looked clean, so I saved to put back in when I reassemble the next time.
prey4surf2000 is offline   Reply With Quote
Old 06-25-2013, 09:56 PM   #13
Senior Administrator


Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,638
Thanked 991 Times in 770 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

Yes, you should replace them, otherwise you will end up with issues down the road.
Mike is offline   Reply With Quote
Old 07-29-2013, 11:58 PM   #14
Junior Member
Thread Starter
 
Join Date: Jun 2013
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
prey4surf2000 is on a distinguished road
Default

Its fixed!!! Finally.
I decided to trust the machinist that did the heads and bolt them back on using new "torque-to-yield" bolts and new gaskets.
Having done that I started to suspect the lower intake manifold gasket as the cause of coolant leaking into the cylinders. I took the original lower intake gasket to my local Napa guy (who actually went with to school with my son), and he noticed places where leaks were bleeding over to several intake ports. Then someone remember that there was a TSB about this engine.
I found TSB 03-01-010C for an engine coolant leak that specified a new torque setting and reengineered lower intake gasket which I bought directly from the Chevy dealer.
I bolted everything back together and fired it up. It pumped thick white smoke for about 3 minutes then ran smooth with no smoke at all.
We got a high idle problem later that same day but cleaning the IAC and unplugging then reconnecting the TPS solved that problem.
Thanks again for all you help....now back to surfing ...
prey4surf2000 is offline   Reply With Quote
Old 07-30-2013, 07:43 AM   #15
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

thanks for updating the fix
jwfirebird is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2005 Pontiac Montana hard start when hot Danthurs Pontiac 68 05-06-2012 03:31 PM
Pontiac Montana Rims Fit 89? 1989OldsRocket88 General GM Chat 0 01-15-2011 09:37 PM
2002 Pontiac Montana Versatrak JAKSGTP Pontiac 1 05-05-2010 03:59 PM
Pricing Help for Catalytic Converter-98 Pontiac Montana 95SLE Lounge 7 09-11-2006 05:39 AM
Fuel Filter on 98 Pontiac Montana 95SLE Lounge 2 07-12-2005 05:23 AM


Tags
coolant in cylinders, gm 3.4l coolant leak, gm 3.4l head gasket, gm 3400 smoking, montana overheating

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:51 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.