bogdann

Have another thread for starting issues but when I finally got it started it developed a coolant leak down over the air cond compressor. It is only while engine is running but it probably lost 300ml in 5 minutes. While engine was running I got under and had a look and it is high up on the left hand side (looking from front) of the water pump, seems to run over the top of the air pump bracket and down onto compressor. It is like I have missed a bolt but I know they were counted in and all torqued correctly.

I know I will have to strip it back down but thought someone may have also experienced this problem. Also put in a new thermostat so will check the top hose housing.

Thanks for your help.

StratfordShark

The WSM has note to install one of the tensioner bracket bolts with Loctite 574 (thread sealant), as it enters water jacket. Other people have suggested smear of RTV instead, or plumber's tape.

It's bolt 14a on page 15-10, the M8 45mm bolt that as you look at front of engine sits above tensioner cylinder, just to left of tensioner arm. Sounds like it's at least in vicinity of where you have spotted leak?

I know you said you accounted for all bolts, but did you seal this one?

I'm doing my TB just now, so with all the reading it feels as if I'm studying for a test in timing belt installation! Hence being familiar with various notes, watch-outs etc

zekgb

Norm,

I am just going through this myself, literally every hose clamp for the new hoses needed to be cinched down well past what I initially thought would be required. Interestingly they didn't all leak immediately, as I attended to one clamp the additional system pressure caused another to start dripping, rinse, wash repeat. I actually just got finished tearing down the covers again to verify that everything else underneath the covers is dry and confirm that the source of the drips under he compressor was actually the upper radiator hose at the the water bridge. Oily coolant was actually pooled up a couple of inches deep in the valley beneath the thermostat housing. and then dripping down the right front of the block and exiting right below the tensioner.

Chalkboss

I had a similar pesky leak after this service. Leaking at the ac compressor. I had to go back and tighten all the hose clamps, luckily nothing worse. All the clamps were new, so maybe that was the reason some were loose, after a few service cycles.

zekgb

I cleaned up and re-used my old clamps, I figure that the new hoses just need a lot more force to compress - using a socket instead of a screwdriver was the key to getting enough bite although I was careful not to overdue it on the radiator side. The thermostat to reservoir hose was tricky given the lack of access to the clamp and was the cause of a big leak initially.

bills928

+1 I had the same experience, after tearing everything back down only to find nothing leaking, I went back and tightened down the new clamps... upper rad hose was the culprit.... So before you do anything check those hoses !!

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bogdann

+1 for checking the hose clamps. Started stripping down the front and thought I would check the hoses and found the top hose on the engine was not even finger tight. Feeling a bit foolish but lesson learnt.
Thanks for the help.

j.kenzie@sbcglobal.net

Yeah. I had the same thing happen to me. It was the hose clamp on the thermostat housing that was a little loose. I think the new hoses crush down a little and the clamps need to be retightened after a while.
Dave

FredR

The only people who do not make mistakes are those that do nothing!

The professionals can and do make appalling gaffs- just that they usually put it right before you know anything has happened.

Rgds

Fred