whincup wrote:
well ive seen a few overheating issues on the forum... a few similar, but not quite the same... so it only does it at highway speeds (>80km) in 5th gear. drop it to 4th and (despite heavy revving) it actually runs cooler. doing 100km/h the temp gauge hits the red, and i have to drop to 4th and take it easy for a minute or two... i can sit on 60 or 70 no worries in 5th gear through town. it still runs warmer than it should, above halfway but still below 3/4.
i changed the thermostat, although it was a cheap brand one and the seal was a little small, but im about 99% sure thats not the problem. i want to know opinions on this theory:
from what i understand, the engine recycles a little bit of used exhaust gas back into the air intake, to make it run a little leaner, and this helps to cool?? i dont understand it properly, i may have just read that wrong... but at least one of the bolts for my extractors has come off, and theres black soot marks on the engine block where its blowing out exhaust from the gap there. could this mess with the system that recycles air?? its going in on wednesday for new extractors anyway, just hoping it kills 2 birds with one stone...
only other thing is the hose that runs from over the extractors to the air intake broke off a few months back, but from what i understand (again, could be wrong) this only helps warm the engine up in cold weather...
if not, i guess a new radiator is next on the shopping list...
i changed the thermostat, although it was a cheap brand one and the seal was a little small, but im about 99% sure thats not the problem. i want to know opinions on this theory:
from what i understand, the engine recycles a little bit of used exhaust gas back into the air intake, to make it run a little leaner, and this helps to cool?? i dont understand it properly, i may have just read that wrong... but at least one of the bolts for my extractors has come off, and theres black soot marks on the engine block where its blowing out exhaust from the gap there. could this mess with the system that recycles air?? its going in on wednesday for new extractors anyway, just hoping it kills 2 birds with one stone...
only other thing is the hose that runs from over the extractors to the air intake broke off a few months back, but from what i understand (again, could be wrong) this only helps warm the engine up in cold weather...
if not, i guess a new radiator is next on the shopping list...
I would take a guess and say maybe your water pump is not pumping to well, and not moving the coolant enough until you keep the revs up... it could also be a clogged up radiator, but i dont think so... and one other thing, if your cooling system isnt pressurized properly, the coolant will get very hot alot quicker than normal...
A leaking exhaust manifold will not help your engine run well.. but that would effect engine performance and tuning... as far as i understand, it recycles exhaust gases because of the enforced and stupid emissions control system... not sure how it would cool the engine, it just makes it run dirtier and under perform, recycling burnt exhaust gases.....
Anyway, thats my thoughts/opinions, hope it helps...
