![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#26 |
Registered User
![]() Join Date: Aug 2006
Location: Woodstown, NJ
Posts: 669
|
Re: Motor running hot? 210 Degrees!
I agree completely with the timing issue. I run Pontiacs and the timing has to be just about dead on or they run hot. Also check your fluid level in the rad. Water boils at 212*f or 100*c at sea level. Glycol with the pressure will raise the boiling point. If the level is low you may be getting steam pockets in your cooling system and that is where the rumble is coming from. Whatever you do, don't touch the rad cap until that thing settles down. I've seen coolant come up out of a rad like a geyser, hit the underside of the hood and cover the poor guy trying to add water to his rad. That leaves a pretty good mark that you don't forget too soon even if you are only a spectator. Good luck.
|
![]() |
![]() |
![]() |
#27 | |
Senior Member
![]() Join Date: Dec 2006
Location: Studio City, Calif.
Posts: 2,865
|
Re: Motor running hot? 210 Degrees!
Quote:
__________________
'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, 2nd owner, Work-Truck supreme. Best $300 I ever spent. |
|
![]() |
![]() |
![]() |
#28 |
Registered User
Join Date: Apr 2007
Location: Roselawn, Indiana
Posts: 60
|
Re: Motor running hot? 210 Degrees!
1 more thing I didnt see mentioned. I know these puppies did not come with fan clutches but if you happen to have one (some people think they are a good Idea lol) that may be the problem in itself. If you do have one and the goofy thing goes bad it will cause it to run hot, because it does not engage the fan at speed. My '72 C30 HAD one until about 30 minutes after it hit the driveway
![]() All the rest that everyone else mentioned are things that should be checked as well. |
![]() |
![]() |
![]() |
#29 |
Registered User
Join Date: Sep 2007
Location: PA.
Posts: 178
|
Re: Motor running hot? 210 Degrees!
I was doing a search on timing issues and saw this old thread....I thought it wouldn't hurt to add a comment.
For you guys with the inline 6 (194,230,250,292).... My truck was running hot. I installed a new water temp. gauge. After warm up the gauge was reading 225 at idle. I thought many things could be contributing to this. I also had a minor leak in the radiator. I wasn't losing a whole lot of coolant but the rad looked shot to me, so I said why mess around, and just ordered a new one.Also replaced the thermostat. After intsalling it the 292 still ran hot...220 degrees. I moved the location of the sending unit from the cylinder head to the thermostat housing. The water temp is higher the closer you are to the combustion chambers. Problem solved. Engine now runs right at 195....right where it's supposed to be.
__________________
_____________________________________________ 69 C-20 292, 4 spd O/D, 4:56 rears. No a/c p/s p/b p/w......restoration project,"Operation:Stovebolt" 78 C-10 305 TH350 new (old) daily driver 02 Suburban Z71 a.k.a. the family truckster 99 Silverado 1500 Z71 |
![]() |
![]() |
![]() |
#30 | |
Senior Member
Join Date: Mar 2007
Location: VANCOUVER ISLAND, B.C., Canada
Posts: 1,602
|
Re: Motor running hot? 210 Degrees!
Quote:
This makes a lot of sense and can be over looked quite easily searching for a more technical reason to solve this problem. I have new hoses, New rad, tested the thermostat it's fine, and replaced temp sender unit new. Not to mention I have a new temp gauge under dash and I get a reading of 210f. This is at speed or idle the reading is consistent so I've not been too concerned but I'm checking my gauge a lot. Water boils at 212f at sea leval and I've yet to boil over. I never replaced these parts because of this they just needed to be replaced. So I guess if I had replaced these parts because of my truck running too hot I'd be quite frustrated at this point. I'm going to swap locations and see if it will make a difference to my temp. reading. Oh yea .... Never boils over. esll. ![]()
__________________
Tomorrow is for doing today's stuff. ![]() ************************************* This truck has just the right amount of energy for me! ![]() Author: Warren Lake .... (member) Last edited by EAST SIDE LOW LIFE; 10-07-2007 at 11:53 PM. |
|
![]() |
![]() |
![]() |
#31 |
Registered User
Join Date: Dec 2003
Location: here
Posts: 5,789
|
Re: Motor running hot? 210 Degrees!
210 isnt a big deal. Most GM cars in the late 70'-early 80's ran in the 220-240 range. That high always bothered me a little...
|
![]() |
![]() |
![]() |
#32 |
The Original HotRod KnifeMaker
![]() Join Date: Jan 2007
Location: Tenino, Washington
Posts: 811
|
Re: Motor running hot? 210 Degrees!
I have dual electric fans on my 396. When you turn the motor off, and the water is no longer circulating, the temp absolutely climbs. All that heat in the block has to go somewhere. It took me a while to get used to the fan coming on after I turn it off and get out
![]() I checked the place where I bought the fans and the owner took me for a short ride in his truck and it does the same thing. A couple million years ago, when I was in high school, the common talk was that you wanted any gas engine to run as close to 211 as possible. Back then it was thought that hot engines ran better with more power and better mileage. If you aren't running electric fans you are leaving the engine on its' own when the temp climbs after turning it off. I would probably drop down to a lower temp thermostat to prevent boil-over after stopping the engine. Just my .02 ![]()
__________________
Dave 69 GMC SWB 2WD 454 Turbo 400 |
![]() |
![]() |
![]() |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|