DieselTalk

DieselEngineTrader's FREE Diesel Engine Forums

new topic search Categories login View GM Diesel Engines

CATEGORY LISTINGS > GM DIESEL > 93 6.5 hot start [ REFRESH ]
Thread Title:

93 6.5 hot start


Created On Tuesday August 21, 2007 06:38 Diesel Talk
Diesel Talk Forum

slick
Diesel Talk Forum
Posts: 2
Joined: Aug 2007

Note Tuesday August 21, 2007 06:38 View thread in raw text format
Diesel Talk
i have a 93 6.5 that will not start when hot. cranks find ,but after sitting for and hour or so
it will start. this truck has 70000 orginal miles.
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

Snafoow
Diesel Talk Forum
Posts: 79
Joined: Mar 2006

Note Tuesday August 21, 2007 18:27 View thread in raw text format
Diesel Talk
Next time it wont start hot try spraying water with a hose on the injection pump for about five minutes to cool it down. If it starts after this either the electronics on the pump are failing when hot, or the inj pump itself is worn and unable to build enough pressure to open the injectors.

Keep in mind the injection pump is cooled by fuel that passes threw it while the engine is running and when the engine is shut off hot, the temperature of the pump and the fuel in it increases drastically.
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

slick
Diesel Talk Forum
Posts: 2
Joined: Aug 2007

Note Friday August 24, 2007 16:16 View thread in raw text format
Diesel Talk
does a 93 6.5 have electronics on the pump. thanks for the cool down idea
i will try it. is it common to have pump failure at 70,000 miles. thanks for the help.
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

Snafoow
Diesel Talk Forum
Posts: 79
Joined: Mar 2006

Note Monday September 10, 2007 23:07 View thread in raw text format
Diesel Talk
I do believe all 6.5s have electronics, from what I have seen.

The 6.5s are known for pump and pump electronic failures.
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

KevinM
Diesel Talk Forum
Posts: 6
Joined: Oct 2007

Note Friday October 05, 2007 19:59 View thread in raw text format
Diesel Talk
yes the 6.5 has alot of electrical problems . try changing the driver module on the side of the pump. unfortunely yes you have to remove the intake manifold to do this.the driver is the cheapest possibility for you problem and its alot cheaper then a whole pump but if it doesn't solve your problem then you need to replace the pump. I worked for GM as a medium duty mechanic for 4 yrs ran into this many many times. mostly after 60-70 thousand miles
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

KevinM
Diesel Talk Forum
Posts: 6
Joined: Oct 2007

Note Friday October 05, 2007 20:02 View thread in raw text format
Diesel Talk
one more thing dont forget to change the processor chip in the module if you swap it its located in the bottom of the plug-in hole just take an o-ring pick or something of the sort and pull it up out of the pins. it wont run right at all if you dont change it . i seen alot of guys make this timely mistake.good luck.
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

wallerandco
Diesel Talk Forum
Posts: 1
Joined: Oct 2008

Note Saturday October 25, 2008 12:51 View thread in raw text format
Diesel Talk
The 1992 and 1993 Chevy diesels do not have an electronic fuel pump...I know because I have a 1993 also, and it is doing the same thing. If it stays shut down for a few hours, it'll crank back up, but if it is still warm, it refuses. I'm getting ready to tear out the mechanical pump and send it to a shop for diagnosis. There are only a few things that can cause this problem in 1992 and 1993 GM diesels... bad fuel injectors, inoperative fuel lift pump, stopped up fuel filters, worn out injector pump, pinched housing bleed line, or compression loss in the cylinders. I know mine isn't the lift pump (new) or the injectors (new also). It did the same thing a few years ago, and I had the injector pump remaned and replaced the injectors, and it did run well until about a month or so ago. Mine has 480,000+ miles on the engine ( no overhaul so far)!

I hope this will help!

Mike
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
CATEGORY LISTINGS > GM DIESEL [ REFRESH ]
Duncan Rogers (Engineering) Ltd
Duncan Rogers (Engineering) Ltd
Big Bear Engine Company
Duncan Rogers (Engineering) Ltd
Duncan Rogers (Engineering) Ltd
Advertize on Diesel Engine Trader

Customer Testimonials

Newsletter

Subscribe to our mailing list to get all the latest DET news.as well as daily or weekly notifications of new engines, gensets and spare parts listings.

'DieselEngineTrader is a very helpful site when it comes to advertising. We appreciate your attention to help improve the listings at our request. We will continue advertising on your unique website, which has been very helpful in our engine sales. We've recieved inquires from around the world! Thank you.'

Aaron & Laura Lewan, Tennessee, USA

'DieselEngineTrader.com is working good for us - we're selling engines worldwide!'

Mark Johnson, Bobby Johnson Equipment Co., Inc., Oil City, USA

'The DieselEngineTrader.com website is great and we'll continue to use it in the future.'

Robyn Hazen, Government Liquidation, Scottsdale, AZ, USA

Copyright Diesel Engine Trader 2015