vaquaro Posted January 22, 2012 Share Posted January 22, 2012 Found coolant overflow tank empty :eek: and rad low as well . No visible leakage or trace , checked oil dipstick for "milkshake" , and ccv tubes , and air box breather inlet as well . I obviously topped up the coolant and added a new rad cap as well . Been running engine and checking for leaks every 10-15 min. , so far , Nada ! Also searched the area under the heater as well . :dunno: ( 90 , 2.5- 4 popper ) The weather here has been below freezing (minus 5-12 C ) for the last 2 weeks , haven't noticed difference in heat gauge readings other than being slower getting to operating temp. for obvious reasons . Link to comment Share on other sites More sharing options...
dave92cherokee Posted January 22, 2012 Share Posted January 22, 2012 Sounds like it's leaking into the cylinders and burning off. Link to comment Share on other sites More sharing options...
vaquaro Posted January 22, 2012 Author Share Posted January 22, 2012 Sounds like it's leaking into the cylinders and burning off. Headgasket :( Link to comment Share on other sites More sharing options...
mvusse Posted January 22, 2012 Share Posted January 22, 2012 :agree: Link to comment Share on other sites More sharing options...
vaquaro Posted January 22, 2012 Author Share Posted January 22, 2012 Sounds like it's leaking into the cylinders and burning off. Headgasket :( What's the best way to confirm that ? Link to comment Share on other sites More sharing options...
mvusse Posted January 22, 2012 Share Posted January 22, 2012 Check your spark plugs for build up, do a compression test and match those results against the plugs. Link to comment Share on other sites More sharing options...
vaquaro Posted January 22, 2012 Author Share Posted January 22, 2012 :headpop: Mystery solved ,sort of , I now have a visible leak ! Coolant now dripping from rad core . The plastic push-thru fasteners for my flex-o-lite aux. fan have worn through one of the rad tubes . I did fab up support brackets for the fan housing (top) so the weight was off the core but also used the thru-rad fasteners as well . Seems a bolt from the bracket went AWOL . :wall: The new cap I just installed (13lb) created enough extra pressure to lead me to the source....Oh joy , I guess the fix is going to easier then tearing off the cyl. head at least . ...I think it's "Miller time" :thumbsup: , off to the pub I go Link to comment Share on other sites More sharing options...
HOrnbrod Posted January 23, 2012 Share Posted January 23, 2012 I would definitely find an alternate way to mount the aux fan besides the push-though fasteners. It doesn't take much rubbing on the tin foil radiator core to wear through it. Can't you put in a regulation 10-blade aux fan from a 97+ XJ? It'll probably pull as much if not more air through than the Flexolite and will bolt in and last forever. Link to comment Share on other sites More sharing options...
dasbulliwagen Posted January 24, 2012 Share Posted January 24, 2012 I used a fan from a WJ, and adapted it to a couple of 2.8 fan shrouds I had layong around. I epoxied it all together and bolted the shroud/fan assy up as if it were stock, then wired it up with a fan controller. Has been working great for quite a while now. This way there has never been an issue with rad damage. Link to comment Share on other sites More sharing options...
vaquaro Posted January 24, 2012 Author Share Posted January 24, 2012 :agree: I would definitely find an alternate way to mount the aux fan besides the push-though fasteners. It doesn't take much rubbing on the tin foil radiator core to wear through it. Can't you put in a regulation 10-blade aux fan from a 97+ XJ? It'll probably pull as much if not more air through than the Flexolite and will bolt in and last forever. I recall the saying " A short-cut is the longest way to anywhere " . I'm going to keep the current set-up as it has worked well for me BUT this time no thru-fasteners . I can easily fab up top & bottom brackets bolted to the header supports ( with lock-tite this time ). My punishment for m m ing it the first time , is to do it in the pouring rain forecast for tomorrow ( cruel , but fair ) as I have no garage . :thwak: Link to comment Share on other sites More sharing options...
ejndssn Posted January 24, 2012 Share Posted January 24, 2012 not even a tarp to reduce amount of misery you will exposed your self too :idea: Link to comment Share on other sites More sharing options...
vaquaro Posted January 25, 2012 Author Share Posted January 25, 2012 :wrench: Tried the tarp , but the wind just blew the rain straight at me . Got the new rad swapped in then gave the engine a shampoo as it was soaking wet already .Ran the motor for almost an hour then burped the last of the trapped air at the heat sensor . No leaks ,we're good to go :thumbsup: Link to comment Share on other sites More sharing options...
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