help needed big time

[richard1705]

right sorry got busy at work half moons are good and dry cooling system I have a ht that's it it was all good until we torqued the heads you see
bout the ht cap couldn't hear any hissing there it just all flowed out of the overflow like a hose pipe I will block test anyway on Wednesday as ive just ordered 1
anyway of checking if the cap is ok or not
richard

[richard1705]

had the same crap with my other stag no wonder people lose hope in theses engines

[StagnJag]

I've known someone to fit an incorrect pressure cap that fitted but, wasn't long enough to seal to the bottle. Could that be it?

Rgds

Dave

[richard1705]

the thing is it was ok before but its cheap enough will try 1 anyway
thanks everyone for the replies so far
appreciated

[richardthestag]

I had a good cap that didn't quite reach the bottom of the HT tank neck. it needed some gentle persuasion around the rim in order to make that good seal.
the giveaway was the squishy top hose indicating the cooling system wasn't pressurising but also that the leak must be above the water level as there was no water loss.

[richard1705]

update block test is ok big relief ive changed the cap but haven't gone for a test drive if problem persists what would the steps be in checking the cooling system
richard

[Stagdad]

Pressure test it. Use a 1/2" bsp male to 15mm compression fitting in the rad filler cap hole. Fit a small length of 15mm pipe in it the get yourself a cheap pressure tester from a plumbers merchants that pump up with a car or bike pump. If it drops use leak detection spray also avaliable from plumbers merchant.

[richard1705]

tightened a few things up changed the cap went for a drive locally temp just over half way coming up and down 3 1/4 way but not hitting the red still too high one of my front brake is slightly sticking could this cause the slight overheating
richard