Bama79 Posted December 4, 2015 Share Posted December 4, 2015 Hello everyone, I've been driving my 2006 CHN 613 with an AC 460 engine. My mpg is killing me @5.5, loosing coolant and I can't find out where from. No white smoke, not in the oil either. Quote Link to comment https://www.bigmacktrucks.com/topic/42952-need-help/ Share on other sites More sharing options...
farmer52 Posted December 4, 2015 Share Posted December 4, 2015 EGR cooler? 2 Quote Ken PRR Country and Charter member of the "Mack Pack" Link to comment https://www.bigmacktrucks.com/topic/42952-need-help/#findComment-314207 Share on other sites More sharing options...
220cummins Posted December 7, 2015 Share Posted December 7, 2015 Any external leaks around the surge tank or damp lines? Quote Link to comment https://www.bigmacktrucks.com/topic/42952-need-help/#findComment-314590 Share on other sites More sharing options...
1958 F.W.D. Posted December 7, 2015 Share Posted December 7, 2015 Time for an oil analysis......Just because you can't see it in the oil, doesn't mean it isn't there.....Is it being burned and residual running down into the crankcase??? Pay the $15-$20 and get an analysis done. 1 Quote TWO STROKES ARE FOR GARDEN TOOLS Link to comment https://www.bigmacktrucks.com/topic/42952-need-help/#findComment-314592 Share on other sites More sharing options...
PabloJenkins Posted December 12, 2015 Share Posted December 12, 2015 (edited) There must be any external leaks. Check it out minutely or can take the help of expert in the field or company professionals for the advice. Edited June 1, 2016 by PabloJenkins Quote Link to comment https://www.bigmacktrucks.com/topic/42952-need-help/#findComment-315348 Share on other sites More sharing options...
Superdog Posted December 12, 2015 Share Posted December 12, 2015 I never could get any fuel mileage out of the '07 CHN's my son drove. 4 to 4.5 pulling a 53' livestock trailer. How much coolant are you losing? Do you have the stainless overflow tank or plastic? The stainless tank helps,but I've been told these were prone to "coolant push" and using some coolant was not unheard of. Quote Link to comment https://www.bigmacktrucks.com/topic/42952-need-help/#findComment-315350 Share on other sites More sharing options...
blackdog2 Posted December 12, 2015 Share Posted December 12, 2015 air compressor air dryer I had one coolant was leaking through AC and out the dryer Quote Ed Link to comment https://www.bigmacktrucks.com/topic/42952-need-help/#findComment-315354 Share on other sites More sharing options...
220cummins Posted December 13, 2015 Share Posted December 13, 2015 air compressor air dryer I had one coolant was leaking through AC and out the dryerNot to be a smart ass but are you sure that wasn't the dye tracer for the refrigerant? Quote Link to comment https://www.bigmacktrucks.com/topic/42952-need-help/#findComment-315502 Share on other sites More sharing options...
Challenger Posted December 14, 2015 Share Posted December 14, 2015 Not to be a smart ass but are you sure that wasn't the dye tracer for the refrigerant?I think AC means Air Compressor. I sometimes say AC when referring to the air compressor. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/42952-need-help/#findComment-315708 Share on other sites More sharing options...
bbigrig Posted December 14, 2015 Share Posted December 14, 2015 Slow coolant leaks from inside the cooler are common on AC ASET engines. It will start small and then one day turn into clouds of white. I wanted to love that engine series but couldn't. Poor mileage, cooler failures and constant sensor issues. Pressure test that cooler. Some only start to leak as they heat up. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/42952-need-help/#findComment-315722 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.