XT&A4ME Posted September 1, 2006 Share Posted September 1, 2006 Hi and thanks in advance. How can this happen? Anyway I was having this funky overheating problem. The engine seemed to be running too hot but the radiator wasn't! The engine is new to me, was supposed to be good... I recently started using a laser thermometer and ... right side is 100 degrees hotter than the drivers side!!! 160 left, 260 right! Or worse. The cool left side had some gray RTV on it but not the right. The dealership trashed ALL their manuals over 10 yrs old recently so i can't see how and where coolant flows in the block! SACRILIGE. And I've spent two hours reading ALL the overheating threads, so I'm familiar with the consequences of overheating, It's the cause of, needing a good darn fix once and for all!!!!! Now for some real help! Thanks all Jim Link to comment Share on other sites More sharing options...
nipper Posted September 2, 2006 Share Posted September 2, 2006 Can be a few things clogged water passages jumped timing belt (timing off on one side of the engine) cylinder head issue low compression nipper Link to comment Share on other sites More sharing options...
daeron Posted September 2, 2006 Share Posted September 2, 2006 jumped timing belt and clogged water passage come to mind... you could do either step first, but try a good thorough block flush (dont be cheap when you choose a block flush solution, but dont go crazy either.. basically dont assume that your diesel rig cleaner will be better than one that says its made for small car engines) and check the timing belt alignment. i dont know if theres a way to check the timing on the cylinders other than #1, but maybe you could check the timing with a light.. but the timing belt would seem to me to be the first place to check. you could also have some wear in that camshaft pulley, causing some slop in the timing for that side... this would easily cause a hot running condition. i dont know how likely it is that there is a cooling passage blocked causing your problem, but the timing idea is certainly possible. Link to comment Share on other sites More sharing options...
NorthWet Posted September 2, 2006 Share Posted September 2, 2006 I have not split an EA82 case yet to check my assumption, but from the pics and diagrams I have seen the waterpump feeds the disty side of the case, and then water flows through a smallish transom port at the TOP of the block into the non-disty side of the case. This port being at the top, low water levels or anything that inhibits coolant flow should cause the non-disty side of the case to run hotter. My vote goes for t-stat bad or radiator plugged. Can't hurt, though, to check that t-belt and ignition timing are still correct. Link to comment Share on other sites More sharing options...
TomRhere Posted September 2, 2006 Share Posted September 2, 2006 Engine running "lean" on that side could be another culprit. Link to comment Share on other sites More sharing options...
daeron Posted September 2, 2006 Share Posted September 2, 2006 northwet: he said passenger side was running hotter, thats non distributor side. good thought on the thermostat, though... if youre right about the coolant flow then that would certainly cause more heat buildup on the passenger side than on drivers side... (right? water flows up thru the thermostat and into the top of the rad...) tom: running lean is what would happen if the timing belt jumped a tooth or was sloppy from a worn sprocket. Link to comment Share on other sites More sharing options...
NorthWet Posted September 2, 2006 Share Posted September 2, 2006 northwet: he said passenger side was running hotter, thats non distributor side... Isn't that what I said??? Don't confuse me, as there is no sport in that!...(right? water flows up thru the thermostat and into the top of the rad...)... Well, not exactly top, but yeah. The t-stat is mounted to the intake manifold and is fed by the head ports, so if one side of the case is not getting coolant to it you can still get coolant flow to the t-stat and radiator....tom: running lean is what would happen if the timing belt jumped a tooth or was sloppy from a worn sprocket. OK, I am tired and befuddled after work, but: How does t-belt effect mixture??? It will effect lots of things, but "mixture" will still be the same even if (non-disty side) t-belt is missing. (Daeron, sorry for looking like I "tore apart" your post... I was just trying to put it in litle spoonfuls that my mind can handle this morning! ) Link to comment Share on other sites More sharing options...
daeron Posted September 2, 2006 Share Posted September 2, 2006 northwet: advanced timing causing a lean burn, causing too much heat... right? i may have overstepped my knowledge? but that was what i thought.. 'sokay.. i re read your original post, and kinda guess i misinterpreted what you were saying.. i mean, i work late too.. and look at the time i made that post actually this thread answered the questions ive had on direction of water flow thru the engine... so it was kinda bonus learning. Link to comment Share on other sites More sharing options...
NorthWet Posted September 2, 2006 Share Posted September 2, 2006 northwet: advanced timing causing a lean burn, causing too much heat... Naw... Retarded *ignition* timing can cause excess heat rejection, but not lean burn. Incorrect cam (T-belt) timing won't cause a lean condition, just how well the engine breathes, shifting the torque curve characteristics up or down the rev range (within limits). Link to comment Share on other sites More sharing options...
daeron Posted September 2, 2006 Share Posted September 2, 2006 i still utterly fail to understand how ignition timing and camshaft timing mesh together... i mean, sparking with 25 degrees of advance..?? WTF, do not grok in fullness, you know what i mean?? sorry to confuse the original poster...i TRY not to talk to loudly when its (somewhat) out of my arse. Link to comment Share on other sites More sharing options...
nipper Posted September 2, 2006 Share Posted September 2, 2006 Lets try this http://auto.howstuffworks.com/ignition-system.htm and http://www.streetrodstuff.com/Articles/Engine/Detonation/index.php nipper Link to comment Share on other sites More sharing options...
daeron Posted September 3, 2006 Share Posted September 3, 2006 thanks nipper. its been explained to me.. but i havent grasped how it all flows together yet. i havent clicked the links yet but i shall, and i will let you know how helpful they were. Link to comment Share on other sites More sharing options...
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