in need of tune up - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 12-07-2010, 11:42 AM   #11
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Our oll capacity is 4.5 US Qts. You can add up to 5 US Qts without an issue, but I'd bet nearly 6 quarts is getting a bit overfull. Does the oil appear foamy or bubbly on the dipstick?

Another thing to consider is recently most states swapped over to their winter blend fuel and that, along with warming up the car before heading out, or cold start needing more fuel vs air can impact mpg'* as well.
BillBoost37 is offline   Reply With Quote
Old 12-07-2010, 11:55 AM   #12
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

The plugs, unless old and worn shouldn't effect mileage. the air filter is now, again, no effect when new. I'm with Bill, winter blend drops mileage a bit, warming up the car, a bit more, being cold, more fuel is used, yet another drop.

As for the oil, that'* a bit to much. I say drain out a quart. A little over full is OK, but when it'* so full that the standing oil can contact the crank shaft there can be problems. For one it'* drag. The other, as Bill mentioned, foam in the oil. And that can cause big problems by disrupting flow.
Danthurs is offline   Reply With Quote
Old 12-07-2010, 01:32 PM   #13
Senior Member
Posts like a Northstar
Thread Starter
 
bo58gardner's Avatar
 
Join Date: Apr 2010
Posts: 518
Thanks: 0
Thanked 0 Times in 0 Posts
bo58gardner is on a distinguished road
Default

ok, ill go drain and see if i have any improvements tomorrow when i get gas, also, my uncle whos worked for chrystler for 30ish years, told me that when he gaps his plugs, he goes a little higher than recommended so they can burn to proper gap, so my plugs i gapped to .063" too much?
bo58gardner is offline   Reply With Quote
Old 12-07-2010, 01:39 PM   #14
Senior Member
True Car Nut
 
xtremerevolution's Avatar
 
Join Date: Jun 2007
Location: New Lenox, IL
Posts: 2,478
Thanks: 0
Thanked 0 Times in 0 Posts
xtremerevolution is on a distinguished road
Default

Quote:
Originally Posted by bo58gardner View Post
ok, ill go drain and see if i have any improvements tomorrow when i get gas, also, my uncle whos worked for chrystler for 30ish years, told me that when he gaps his plugs, he goes a little higher than recommended so they can burn to proper gap, so my plugs i gapped to .063" too much?
Probably won't make a difference, but I've run 160k miles on my Regal at the proper gap and I never had a problem. I've also noticed a significant drop in fuel economy in the winter over what it was before it cooled down. The PCM is tuned to dump lots of fuel on cold starts to warm up the engine. That will have a pretty big effect on fuel economy.

Also, Bosch plugs are crap for 3800'*. Most people I've talked to who have used them have had bad experiences and they promptly return them and get an autolite/acdelco/champion plug. I've used all 3 brands with equally good experiences.
xtremerevolution is offline   Reply With Quote
Old 12-07-2010, 02:14 PM   #15
Senior Member
Posts like a Northstar
Thread Starter
 
bo58gardner's Avatar
 
Join Date: Apr 2010
Posts: 518
Thanks: 0
Thanked 0 Times in 0 Posts
bo58gardner is on a distinguished road
Default

ok, its below freezing and i havent adapted well yet, just let out about 3/4 of a quart i think and the level on the stick seemed better. also,my maf ibelieve is broke which sseidriver97 informed me that it was the cause of my idle issue, could it also be my mpg issue?
bo58gardner is offline   Reply With Quote
Old 12-07-2010, 03:30 PM   #16
Senior Member

True Car Nut
 
sseidriver97's Avatar
 
Join Date: Mar 2010
Location: Portage mi
Posts: 7,124
Thanked 3 Times in 3 Posts
sseidriver97 is on a distinguished road
Default

yes very very much so lol..
FYI his maf is broken at the tip like they love to do..i put a diffrent one in from the shop and the idle issue smoothed out but then killed the car and wouldnt let it start so i put his old one back in and boom she ran like she did before....anyways bo yes your bad MAF will help with bad mpgs as its not reading correct airflow and not telling the comp accurate amounts of feul it needs
sseidriver97 is offline   Reply With Quote
Old 12-07-2010, 03:42 PM   #17
Senior Member
True Car Nut
 
xtremerevolution's Avatar
 
Join Date: Jun 2007
Location: New Lenox, IL
Posts: 2,478
Thanks: 0
Thanked 0 Times in 0 Posts
xtremerevolution is on a distinguished road
Default

Quote:
Originally Posted by sseidriver97 View Post
yes very very much so lol..
FYI his maf is broken at the tip like they love to do..i put a diffrent one in from the shop and the idle issue smoothed out but then killed the car and wouldnt let it start so i put his old one back in and boom she ran like she did before....anyways bo yes your bad MAF will help with bad mpgs as its not reading correct airflow and not telling the comp accurate amounts of feul it needs
Yep, a bad MAF will absolutely destroy your fuel economy and idling. Seriously, I would have gone there first without asking any other questions about a tuneup.
xtremerevolution is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
do I need a tune up? black_friday 2000-2005 14 05-18-2010 11:42 PM
Gonna be doing a tune up on a Aurora... I need advice. Bonneville92V688 Bonneville GXP/ Northstar Powered Cars 4 11-03-2006 01:49 AM
total Tune up. what do I need Professor Fate 2000-2005 5 09-18-2006 11:11 PM
Tune up SSEi95 1992-1999 20 09-18-2002 06:25 PM
tune up bon21 1992-1999 8 09-09-2002 12:04 AM


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 03:58 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.