overheating???
Thread Starter
|
Mountain Pass
Joined: May 2013
Posts: 110
Likes: 5
From: Memphis, TN
overheating???
My 1978 F-100, 302, had not been running for months. I replaced the carb and got it back into action. The truck has a 180 degree thermostat - however while driving it around, the temp gauge reads a steady 210 degrees.
What is this indicating (beside overheating) and what do I need to do?
Thanks,
CB3
What is this indicating (beside overheating) and what do I need to do?
Thanks,
CB3
Laughing Gas
Joined: Jan 2014
Posts: 1,077
Likes: 500
From: Kenai
If it hasnt run much recently, there is also the possibility that the lower water passages have been packed off with rust. I've had 3 engines recently, that when I popped out the freeze plugs, there was a ton of rust in them.
390 in a 67 galaxie. Freeze plugs started leaking, popped them out and there was a ton of rust.
390 in a 75 f250. Hadn't run much at all between 91 and now. Tons of rust in lower passages.
460 for f250. Bought it in a supposedly rebuilt, low mile condition. I did hear it run. Then it sat for 6 years until now. I just popped the freeze plugs out and it was absolutely packed with rust and nastly black fluid.
390 in a 67 galaxie. Freeze plugs started leaking, popped them out and there was a ton of rust.
390 in a 75 f250. Hadn't run much at all between 91 and now. Tons of rust in lower passages.
460 for f250. Bought it in a supposedly rebuilt, low mile condition. I did hear it run. Then it sat for 6 years until now. I just popped the freeze plugs out and it was absolutely packed with rust and nastly black fluid.
Trending Topics
FTE Legend
Joined: Nov 2015
Posts: 30,935
Likes: 4,124
From: Angier, NC
If it hasnt run much recently, there is also the possibility that the lower water passages have been packed off with rust. I've had 3 engines recently, that when I popped out the freeze plugs, there was a ton of rust in them.
390 in a 67 galaxie. Freeze plugs started leaking, popped them out and there was a ton of rust.
390 in a 75 f250. Hadn't run much at all between 91 and now. Tons of rust in lower passages.
460 for f250. Bought it in a supposedly rebuilt, low mile condition. I did hear it run. Then it sat for 6 years until now. I just popped the freeze plugs out and it was absolutely packed with rust and nastly black fluid.
390 in a 67 galaxie. Freeze plugs started leaking, popped them out and there was a ton of rust.
390 in a 75 f250. Hadn't run much at all between 91 and now. Tons of rust in lower passages.
460 for f250. Bought it in a supposedly rebuilt, low mile condition. I did hear it run. Then it sat for 6 years until now. I just popped the freeze plugs out and it was absolutely packed with rust and nastly black fluid.
Yes others in the block also leaked and it would over heat in no time and it only had 60k on the motor.
Yes it is full of rust and why the plugs leaked.
Buddy also had a non-Ford run hot because of rust sitting in the bottom of the block.
To the OP was this when driving it ran hot and if you stopped it cooled down some?
Lower radiator hose have a spring in it?
New hoses do not come with springs now so you have to reuse the spring from the old hose.
The spring keeps the hose from being sucked closed and stopping flow as it is on the suction side of the pump.
Dave ----
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Cargo Master
Joined: Oct 2011
Posts: 2,251
Likes: 305
From: Kenner,La.
Cooling system
A radiator shop owner explained to me that what looks like rust is actually casting mud being released from the pores in the cast iron. If you rub it between your fingers it feels slimy. When the engines are cast they are treated with a sealer which breaks down over time and the mud starts leaching out. The only cure is to knock out all the plugs and try to hose out as much as possible.
Thread Starter
|
Mountain Pass
Joined: May 2013
Posts: 110
Likes: 5
From: Memphis, TN
overheating
Thanks everyone for the suggestions. I tried a heat gun on the thermostat housing today - but for some reason my gun would not work.
Perhaps I will do a radiator flush.
Thanks again,
CB#
Perhaps I will do a radiator flush.
Thanks again,
CB#
Thread
Thread Starter
Forum
Replies
Last Post
JJFizzle
1973 - 1979 F-100 & Larger F-Series Trucks
8
Feb 7, 2023 04:28 AM
Grease & Gravel
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
15
Nov 30, 2021 12:04 PM
JDSTONE
1973 - 1979 F-100 & Larger F-Series Trucks
16
Dec 17, 2003 07:56 PM
paulmal
1961 - 1966 F-100 & Larger F-Series Trucks
6
May 4, 2002 01:14 PM