Rb20Det Coolant Leaks

[sprinter666]

i just had my welch plugs replaced and my leaks fixed etc coolant replaced no more than a month or two ago and now i have coolant pooling again is this commin in rb's im more of a toyota guy and havnt played around under the bonnet of this thing to much, hints and ideas useful! thanks all

[89CAL]

Did you start a thread to ask if its a common thing?

Not that I'm aware of, did you buy good quality welch plugs/fittings?

Ive had 2 RB30's and 2 RB25's and have never had a coolant leak problem with any of them from the engine

All I can suggest is that the Welch plugs were not of good quality or not installed correctly

[Sinista32]

Perhaps since the welch plugs were put in the pressure has caused other weaknesses to appear (or it wasn't a good job replacing welch plugs)

check heater hoses, pipes around the back of the block and under the plenum.

[533 RYC]

Maybe you can tell us where the coolant is pooling, or even better take pictures & post them up!

As Sinista32 said, other weak points might now be making themselves known.

If it is the welch plugs leaking again, there are 2 ways to fix them:

1: Do them again, making sure all surfaces are CLEAN & FREE of old krud. Use a decent sealant, like No.3 when installing them.

2: I'm not mentioning on a public forum like this. A mate of mine use to use this process after popping welch plugs to check head studs on Jags. Worked 100%!

[sprinter666]

it was indeed another weakness that showed, got it on the hooist today, fkn heater hose.... and that explains why im having problems starting it i think, its leaking right on to the starter motor so quick followup qwuestion do i now need to replace or atleast remove and clean the starter?

[533 RYC]

Oh excellent. Glycol does bad shit to electrics. I would recommend removing the starter, give it & the wiring connectors a good clean with a can of brakeclean, then repeat the process again with (now this gets a bit expensive) CRC CO Contact cleaner (about $35 a can) it washes away most stuff & leaves no residue, then floor test the starter before refitting. Its still cheaper than getting someone to open it up or a replacement!

[sprinter666]

truth except for the fact im broke as hell lol i can source brake clean from work might see if CRC is an option. thanks!