DieselTalk

DieselEngineTrader's FREE Diesel Engine Forums

new topic search Categories login View GM Diesel Engines

CATEGORY LISTINGS > GM DIESEL > 1996 6.5 turbo kick in problem

[ REFRESH ]

Thread Title:

1996 6.5 turbo kick in problem

Created On Monday July 22, 2002 16:29

Denlawn

Posts: 2
Joined: Jul 2002

Monday July 22, 2002 16:29

I've got a problem with my turbo engaging. recently went on a trip, the turbo haden't been kicking in at all, for quite some time, however on this trip, it did kick in a few times, maybe 5-6 times total (1200 mile trip ) but when it did engage, the rpm's were over 3000.
I've had this thing to a few different dealers, they say its right ! I know better.
Can anyone please help me out ?
Thanks,

Denlawn

Quote

Top

Bottom

badges65

Posts: 132
Joined: Jul 2002

Monday July 22, 2002 18:13
that engine is rated up to 3600 RPM.. have you fitted a boost gauge?? what revs were you doing before the turbo kicked in?? was it on demand or just gradual increase of speed? what mileage has the engine done?? i would be looking at unbolting the turbo and get it checked don ------------------------- http://invertedvboats.741.com/

Quote

Top

Bottom

Denlawn

Posts: 2
Joined: Jul 2002

Tuesday July 23, 2002 21:30

Don,
thanks for the reply.
the last dealer i went to said, i had proper boost, i'm not sure he really knew, as he didn't know what
pressure i needed when i asked.
As far as revs, i was pulling my camper, high profile 5th wheel. i would say i was demanding power.
milage is 52,000 , i've had this problem for 3 years.
the turbo was replaced 3 years ago, and has never worked properly.
I'm serious when I say, there is no one around here that knows how to fix it !
I need to find a mechanic that knows the 6.5
I'm located in north west Pa.

thanks,

Denlawn

Quote

Top

Bottom

badges65

Posts: 132
Joined: Jul 2002

Wednesday July 24, 2002 00:21

Hi,
has this problem been since the turbo was replaced???????? if it has there is the problem. is it the right turbo???
I have posted this on my website forum may get someone who knows a bit more.
The service manual i have is for a 6.2 and doesnt show anything for a turbo so cant help much with boost pressure.
go to this site it may be of help to you ..
http://www.thedieselpage.com/
Went and reg. myself but still unable to get to forums even with a reply email and login so may take a while to get to them!!!!
don
have a peek at this site also may be of help..
http://www.bankspower.com/
another site you could look at ..
http://mywebpages.comcast.net/00gmc/index.html

don

-------------------------
http://invertedvboats.741.com/

Edited: Friday July 26, 2002 at 00:50 by badges65

Quote

Top

Bottom

enginebuilder

Posts: 13
Joined: Aug 2002

Tuesday August 06, 2002 13:39

does it have an intercooler?, is it blocked?. does this eng: have E.G.R.? are the inlet or exhaust
manifolds partially blocked?.with turbo outlet pipe disconnected from inlet man: or intercooler can you feel any boost pressure?. with turbo outlet pipe disconnected from turbo and eng: off, does the shaft spin?. does shaft spin with eng: running can you see? use a mirror . is the turbo wastegate siezed.

Edited: Tuesday August 06, 2002 at 13:44 by enginebuilder

Quote

Top

Bottom

ZTJ

Posts: 8
Joined: Aug 2002

Monday August 12, 2002 14:27

Hi.
I don't know if it is any help but i have some 6.5 ltr turbo diesels in my boat and i can tell that the charter pressure on theese engines must be between 60 and 170 Kpa. (app 0.6 - 1.7 bar). These engines has no "wastegate" to regulate the engine "suction pressure" it is done by a exhaust bypass valve ( bypasses some exhaustgas when the suctionpressure is too higt.) A pressure sensor on the intakemanifold tells the computer how high / low the suctionpressure is and the computer actuate an airactuator to the bypassvalve.
I think that your problem can be found around in this system.
A GM workshop can temp. put on a "mousetrap" on your engine and mesure the suction pressure during driving, and maybe you will see a drop in suctionpressure now and then.
Try WWW.dieselpump.com/chart_3.html
Do not try to block the exhaust bypassvalve mechanical in attemp to raise or stabilize your suctionpressure!!! it can destroy your pistons and bearings.

Best regard Torben :-)

-------------------------
torben.jespersen@mail.dk
Denmark

Edited: Monday August 12, 2002 at 15:40 by ZTJ

Quote

Top

Bottom

CATEGORY LISTINGS > GM DIESEL

[ REFRESH ]

SELECT Advert_Number, Size_Type, Banner_Name, FName, LName, CompanyName FROM Advert_Imp a LEFT OUTER JOIN Seller s ON a.Company_ID = s.SellerID WHERE Show_Advert=1 AND Size_Type = 2 ORDER BY Advert_Number

SELECT Imps_Available FROM Advert_Imp WHERE Advert_Number = UPDATE Advert_Imp SET Imps_Available = #Imps_Available1# WHERE Advert_Number = SELECT Impressions FROM Advert_Imp_Trans WHERE Advert_Number = AND Month(Date)=#CurrentMonth# AND Year(Date)=#CurrentYear# UPDATE Advert_Imp_Trans SET Impressions = #Impressions1# WHERE Advert_Number = AND Month(Date)=#CurrentMonth# AND Year(Date)=#CurrentYear# INSERT INTO Advert_Imp_Trans (Advert_Number, Date, Impressions, Clicks) VALUES (#Advert_Number#, #CurrentNow#, 1, 0)

SELECT Advert_Number, Banner_Name, FName, LName, CompanyName FROM Advert_Imp a LEFT OUTER JOIN Seller s ON a.Company_ID = s.SellerID WHERE Show_Advert=1 AND Size_Type=1 ORDER BY NEWID()

Customer Testimonials

'Had a Mack 7427 in my shop for 2 years and couldn't sell it! Within a month of advertising on DieselEngineTrader.com I sold the engine to a guy in Oklahoma - was glad to get rid of it!'

Stan iles, Aqua Fria Aggregates, Arizona, USA

'We've sold 7 engines in 4 months through DieselEngineTrader.com - one to Utah, three to South Dakota, one to New York, one to Kansas and one locally in Wisconsin! I also advertise in other publications but DieselEngineTrader.com gets the best results and at a great price too! I like the way that my engines are shown at the top of Google searches and DieselEngineTrader.com will definitely be playing a major part in my advertising from now on.'

Aaron Lewin, Wisconsin, USA

'Your website is working well for me - This month I have shipped engines to Canada, South America and several in the USA. Thank You.'

Jim Williams, Diesel Power Train Co. Colbert, USA

DieselTalk

1996 6.5 turbo kick in problem

Customer Testimonials

Newsletter