Technical overheating and radiator plug issues

[ronminiatures]

HI

My Fiat X1/9 is overheating and I removed the radiator plug to let the air out...I unscrewed to much and now the plug does not seam to be screwing back???? Now I got lots of air in there.... It is a aluminium flange with brass tread at the end, it goes in the radiator on a matching aluminium hole. I cant see the tread and it does not thread. I took real good care of doing it by hand to make sure I did not cross tread! Still do not know why overheating? oil is perfect after a 700miles trip. Started heating up half way in the trip. I had to have full heat on! Thanks

Ron

 

[popsprocket]

That's not much to go on for the over heating issues. When does this occur? (e.g. on long trips, short trips, in traffic, what's the weather like?)

As for the bleeder screw it can be a bit of a pain to handle it, have you got a mirror to use to see down the hole from in the front boot area? If worst comes to worst you'll probably have to drop the rad out to get the bleeder screw back in.

 

[jimbro1000]

The best option for bleeding any of the 1500 carb based models is to jack the rear of the car up as high as it will go and use the water feed to the autochoke as the bleed point. It is much, much easier and far more effective. It is already the highest point in the cooling system even with the car on the flat and level and easily accumulates any air trapped in the system.

The manual choke 1300s don't have this option so the radiator bleed is really your only choice and the injection models have the same problem.

 

[ronminiatures]

That's not much to go on for the over heating issues. When does this occur? (e.g. on long trips, short trips, in traffic, what's the weather like?)

As for the bleeder screw it can be a bit of a pain to handle it, have you got a mirror to use to see down the hole from in the front boot area? If worst comes to worst you'll probably have to drop the rad out to get the bleeder screw back in.

Thanks for the reply!

it does take a while to heat up, mainly when not goes fast, yesterday in trafic...it whent over the red.....The weather was hot!

Yes i do have a mirror and a light...and you are right I will have to get it down...another pain in the B..T.

The fan starts, the carb fan starts on and off when the car is not running. Sometimes I am just stoping and the fan is not on....after a couple of minute ...maybe it start. Is that the way it goes?

I am glad you find the plug hard...Its a pain ( i feel less retarded). I made a small allen key tool to get it in but....It seams the plug goes all the way to the aluminium, but the brass tread do not look "cross treaded"? I cant even see the brass female part. would it be good if I removed more prestone to check for sure? Here are some pictures.

I did a 700 miles trip and it started overheating half way, then I had the full heat ON all the time and it was a bit under the red. Now it seams worst after I had a mecanic do some exaust, change thermostat stuff.

When it over heats...all the time the overflow starts boiling and vomits prestone on the ground....


Thansk again and sorry for my bad english it is my second language.
Any comments welcome. Please!

Ron from Montreal

 

[ronminiatures]

The best option for bleeding any of the 1500 carb based models is to jack the rear of the car up as high as it will go and use the water feed to the autochoke as the bleed point. It is much, much easier and far more effective. It is already the highest point in the cooling system even with the car on the flat and level and easily accumulates any air trapped in the system.

The manual choke 1300s don't have this option so the radiator bleed is really your only choice and the injection models have the same problem.

Thanks!, I like that. sounds a lot easier.

Ron from MOntreal

 

[ronminiatures]

Robert found it!!

​

Robert found it!! The aluminium has broken from the rad... Maybe I will try some alumium epoxy putty? Robert said that it is most likely air traped for the overheating....He said bleed from the choke 3 or four times.... THANKS A LOT ROBERT . Thanks all

Ron from Montreal

pictures here (I still do not know how to post pictures...)
https://www.fiatforum.com/attachment....3&d=1283445936
https://www.fiatforum.com/attachment....2&d=1283445936

 

[Lawson]

This is exactly what happened to my car about 3 months ago. It would overhead in traffic and during spirited driving. Thinking it was trapped air, i decided to bleed the radiator. The bleed screw was stuck solid and in my attempts to unscrew the bleed screw I managed to unscrew it and the and the boss fitted to the radiator. When I realised what had happened I took the radiator out of the car and took it to a local radiator repair workshop. They re-cored the radiator and repaired the bleed screw. The old radiator was 3/4 blocked with c**p from 22 years of driving leading to my over heading problems. On refitting the radiator I bled it through the refitted bleed screw and it has totally solved my overheading problems. The temperature sits at about 85 degrees C constantly. No more worries about overheating in traffic.

I suggest that you do the same rather than trying to repair it with putty! Cost about £80.

Lawson.
1988 1500cc with carb.

 

[jimbro1000]

If you can find a serck-marston distributor they even provide a life time warranty on the radiator. Not sure if they are truely international though - even if they do own most of the design patents for car radiators.

 

[ronminiatures]

Thanks guys,

Will probebly change it. It will be done for the next while!

Ron from MOntreal