How screwed am I, overheated and now seems to have low power - Dodge Cummins Diesel Forum
94-98 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

 7Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 31 (permalink) Old 07-18-2019, 04:20 PM Thread Starter
Newbie
 
Join Date: Jul 2019
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
How screwed am I, overheated and now seems to have low power

Bought my first 12v last night! Did a test drive and everything seemed fine until I parked it. Small amounts of smoke coming from the hood, popped it up and it was coming from the top of the engine, with a slight smell of oil. Owner claimed it just hadnt run in a while and a friend of mine confirmed that his does that from time to time. Paid the piper and left.

Got about 2 miles down the road and realized that it was overheating, pulled over and found that the hose on the bottom of the radiator was disconnected. Filled it with water (that was all I could do on the side of the road) and drove it home. Overheating has gone away but it doesn't seem to have the power it should seemed to struggle to make it up my relatively steep driveway in second gear. The engine seems to be "loping" almost like not all cylinders are firing.

I am not great at diagnosing this stuff yet, any ideas on what I should be looking at first? Or have I just dumped a bunch of money down the drain? Previous owner is MIA, wont return calls or texts.

Anrkist is offline  
Sponsored Links
Advertisement
 
post #2 of 31 (permalink) Old 07-18-2019, 04:32 PM
The Uppity 12v Guy
 
dauntless89's Avatar
 
Join Date: Jul 2013
Location: Cedar City, UT
Posts: 7,704
Thanks: 848
Thanked 1,319 Times in 948 Posts
Garage
iTrader Score: 1 reviews
Did it leak all the coolant out or was it empty when you left?

Probably lost the head gasket and has low compression in a couple cylinders.

Worst case, it overheated to the point of warping the cylinder walls and it needs a rebuild to be "right."

'95 2500 ECLB 4x4, 334k and paused due to epic transformation in progress.
dauntless89 is offline  
post #3 of 31 (permalink) Old 07-18-2019, 04:33 PM
Moderator
 
9297oldram's Avatar
 
Join Date: Sep 2010
Location: Huntington In.
Posts: 20,059
Thanks: 631
Thanked 2,178 Times in 2,035 Posts
iTrader Score: 0 reviews
If it has low power it could also have a plugged fuel filter or the FSS ( fuel shutoff solenoid ) may not be pulling all the way up. Best thing to do is to pull up all the way on the FSS arm and tie it up and take it for a drive.

84 K5 Blazer 97 12v, 47re with E-TransControl, Dodge Dana 60 with free spin hubs, Dana 70, B&M Mega shifter

96 F350 SC dually zf5, 4x4, 92 Cummins, THD 5x12's, THD fuel pin, THD HVLP with adjustable fuel pressure mod, WM, h1c 60/60/12cm WG wired
9297oldram is offline  
Sponsored Links
Advertisement
 
post #4 of 31 (permalink) Old 07-18-2019, 05:34 PM Thread Starter
Newbie
 
Join Date: Jul 2019
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Yeah pretty much all the coolant was gone
Anrkist is offline  
post #5 of 31 (permalink) Old 07-18-2019, 05:39 PM Thread Starter
Newbie
 
Join Date: Jul 2019
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by 9297oldram View Post
If it has low power it could also have a plugged fuel filter or the FSS ( fuel shutoff solenoid ) may not be pulling all the way up. Best thing to do is to pull up all the way on the FSS arm and tie it up and take it for a drive.
Sounds worth a shot, I will see if I can figure out how to do that.
Anrkist is offline  
post #6 of 31 (permalink) Old 07-18-2019, 05:39 PM
The Uppity 12v Guy
 
dauntless89's Avatar
 
Join Date: Jul 2013
Location: Cedar City, UT
Posts: 7,704
Thanks: 848
Thanked 1,319 Times in 948 Posts
Garage
iTrader Score: 1 reviews
That doesn't answer the question.

Was the engine dry when you left the seller, or was it full and the hose popped off while going down the road?

'95 2500 ECLB 4x4, 334k and paused due to epic transformation in progress.
dauntless89 is offline  
post #7 of 31 (permalink) Old 07-18-2019, 05:47 PM Thread Starter
Newbie
 
Join Date: Jul 2019
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by dauntless89 View Post
That doesn't answer the question.

Was the engine dry when you left the seller, or was it full and the hose popped off while going down the road?
I believe it was dry when I left the seller hence the small amount of smoke and oil smell that should have tipped me off. The first time I looked at the temp gauge was after I paid and left. It was pegged out. Honestly I didn't even think to check the fluid. I know it's a novice mistake.
Anrkist is offline  
post #8 of 31 (permalink) Old 07-18-2019, 05:59 PM
Cummins Enthusiast
 
ddurr92's Avatar
 
Join Date: Apr 2017
Location: Fayetteville Tn
Posts: 261
Thanks: 38
Thanked 3 Times in 3 Posts
iTrader Score: 0 reviews
Well assuming all issues are good, no headgasket or anything bad like that, since this is ur first 12v, just know these trucks already are underpowered.. they are dogs until u tune them up.

Sent from my SM-G955U using Tapatalk
ddurr92 is offline  
post #9 of 31 (permalink) Old 07-18-2019, 06:02 PM
The Uppity 12v Guy
 
dauntless89's Avatar
 
Join Date: Jul 2013
Location: Cedar City, UT
Posts: 7,704
Thanks: 848
Thanked 1,319 Times in 948 Posts
Garage
iTrader Score: 1 reviews
Mistakes happen. Just trying to figure out what level of predicament you're in. If the hose popped off on the drive home you almost certainly would have smelled antifreeze and it would have left a huge wet mess under the truck. If it was bone dry down there and no antifreeze smell, it was likely dry when you left.

The oil smoke isn't necessarily a major red flag, any truck with leaky valve cover gaskets will get that on startup as the oil runs onto the exhaust runners. That said, I've never seen that result in an amount of smoke you could see with the hood closed.

It will take a long time for a dry engine to show on the gauge as overheating, as heat will only be conducted through the block to the sending unit instead of through the coolant under active circulation.

I would fill it up with coolant and drive it around a bit, see if coolant & oil are mixing, either are leaking externally, if it's consuming coolant, or if it's pressurizing the cooling system (look for bubbles in the overflow tank). Those are the 4 symptoms of a bad head gasket.

'95 2500 ECLB 4x4, 334k and paused due to epic transformation in progress.
dauntless89 is offline  
post #10 of 31 (permalink) Old 07-18-2019, 06:36 PM
On call 24/7
 
98whitelightnin's Avatar
 
Join Date: Oct 2008
Posts: 11,857
Thanks: 1,876
Thanked 1,222 Times in 1,085 Posts
iTrader Score: 16 reviews
if the seller sold you a truck that was low on coolant, he probably didnt do much maintenance on it to begin with so you should go ahead and flush the system. Get your self 3 gallons or the green or yellow (mix with anything) antifreeze coolant and 3 gallons of distilled water. I would pull the thermostat and stick your water hose in the block, heater core and radiator. Get new upper and lower hoses as well since the old ones are falling off.

1998 12v, 4x4, Club Cab, Carli, Thuren, BlueTop, Core 4x4, BD Diesel, PDD 5x.012, South Bend
2012 Laramie Longhorn, EFI by Ryan, Carli, Thuren
1995 Dually, Weston's 5x.016, 4k GSK, 5" FloPro, 255/85r16 Toyo M/T, Goerend, ARP, 60# Springs, BW 62/65/14, BW 75/96/1.10, Isspro, Fass 125, BDP Sump, 7mm DV's, 751 HP 1883 FP Torque on NOS
1998 P-Pumped 24v, 4x4, NV4500 swap
98whitelightnin is online now  
post #11 of 31 (permalink) Old 07-18-2019, 09:47 PM
Diesel Head
 
Loud Pedal's Avatar
 
Join Date: Dec 2010
Posts: 2,085
Thanks: 196
Thanked 131 Times in 120 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by ddurr92 View Post
Well assuming all issues are good, no headgasket or anything bad like that, since this is ur first 12v, just know these trucks already are underpowered.. they are dogs until u tune them up.

Sent from my SM-G955U using Tapatalk
Ya, that's not true.....There is certainly more power/HP to gain, some free...but even stock trucks (at least manual's) are not dogs even with factory settings....

98-4x4 5spd
Loud Pedal is online now  
post #12 of 31 (permalink) Old 07-18-2019, 11:13 PM
Cummins Enthusiast
 
ddurr92's Avatar
 
Join Date: Apr 2017
Location: Fayetteville Tn
Posts: 261
Thanks: 38
Thanked 3 Times in 3 Posts
iTrader Score: 0 reviews
Mine was haha. Idk why. Lol

Sent from my SM-G955U using Tapatalk
ddurr92 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Dodge Cummins Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in













Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome