Mack Technician Posted August 7, 2017 Share Posted August 7, 2017 I've been having a fuel dilution issue on an engine. Liehberr Dealership Tech came up for a warranty diagnostic and high pressure fuel pump replacement. Guy was dabbing oil on white paper to find the "fuel halo". I grabbed an oil drop from a known good engine oil sample kit......same paper........no halo. I figure by the sample curve this drop has about 5%-7% dilution. Takes about 15 seconds to appear. Quote Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/ Share on other sites More sharing options...
HeavyGunner Posted August 7, 2017 Share Posted August 7, 2017 Learn something new all the time 1 Quote The problems we face today exist because the people who work for a living are outnumbered by the people who vote for a living.The government can only "give" someone what they first take from another. Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-376878 Share on other sites More sharing options...
KDog Trucking Posted August 8, 2017 Share Posted August 8, 2017 (edited) Way faster than sending in an oil sample. Edited August 8, 2017 by kamp_dogg typo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-376950 Share on other sites More sharing options...
Mackpro Posted August 8, 2017 Share Posted August 8, 2017 You should see the fuel in oil test for the new common rail engine. Lucky for us we have not had a single issue with the 7 or 8 trucks we have running around here for the last 5 months. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-376952 Share on other sites More sharing options...
theakerstwo Posted August 8, 2017 Share Posted August 8, 2017 The drop of oil on a paper is not a new test.35 years ago at that time some of the old timers said they used it.It was to drop oil on a brown sack with a light behind it.I have tryed it a few times but did not find what i was looking for.Then some of them could smell of the oil and say yes or no.I do believe the paper test will work. 1 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-376961 Share on other sites More sharing options...
Mack Technician Posted August 8, 2017 Author Share Posted August 8, 2017 2 hours ago, Mackpro said: You should see the fuel in oil test for the new common rail engine. Lucky for us we have not had a single issue with the 7 or 8 trucks we have running around here for the last 5 months. No keeping secrets bro....we are about to buy another L180H next month? Hoping they would produce a spectrum test someday. Quote Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-376964 Share on other sites More sharing options...
fjh Posted August 8, 2017 Share Posted August 8, 2017 4 hours ago, Mackpro said: You should see the fuel in oil test for the new common rail engine. Lucky for us we have not had a single issue with the 7 or 8 trucks we have running around here for the last 5 months. We only got a few out here so far Time will tell i guess! Maybe they finally got something we can be Proud of ! Unfortunately the after treat is the weak link in most all the stuff ( EVERYBODY'S! ) LETS MAKE MACK GREAT AGAIN! Oh someone is already using that line! Quote Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-376979 Share on other sites More sharing options...
Mack Technician Posted August 8, 2017 Author Share Posted August 8, 2017 I spend 1/4 of my work hours between the turbo outlet pipe and the exhaust tip. Quote Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-376983 Share on other sites More sharing options...
Mackpro Posted August 8, 2017 Share Posted August 8, 2017 17 minutes ago, Mack Technician said: I spend 1/4 of my work hours between the turbo outlet pipe and the exhaust tip. 90% of mine is injectors/cups and exhaust. Job security! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-376986 Share on other sites More sharing options...
fjh Posted August 8, 2017 Share Posted August 8, 2017 (edited) 1 hour ago, Mackpro said: 90% of mine is injectors/cups and exhaust. Job security! You will then have a problem in five years ! Because they MAY have made MACK Great again! The injector cup problem is Solved We Now Have Makeshift Common RAIL ! Because you said this! You should see the fuel in oil test for the new common rail engine. Lucky for us we have not had a single issue with the 7 or 8 trucks we have running around here for the last 5 months. So your life maybe cut down to just emptying the ash cans on DPFS ! Edited August 8, 2017 by fjh Quote Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-376989 Share on other sites More sharing options...
Mackpro Posted August 9, 2017 Share Posted August 9, 2017 However today its the dreaded "Chassis Harness of Death". One of my all time favorites. Right up there with splinters under the finger nails! lol Quote Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-377055 Share on other sites More sharing options...
james j neiweem Posted August 9, 2017 Share Posted August 9, 2017 (edited) You can buy these oil sample test kits for personal use. They also have transmission, power steering and coolant test kits. Kits are very cheap. I'll look around to find the company. Found it. Fluid RX.-A website called gwrauto.com is a distributor for Fluid RX. Looks like it might be cheap and reasonably accurate. They have various test cards that you can compare your samples with. I used to be in charge of the oil sampling program at a large nuclear facility. Sending samples out is very accurate but also very expensive. Turn around time may be too long for a problem truck. This test kit should allow you to take a questionable truck out of service very quickly until you can get the lab samples back. Should be a good tool for the hobby truckers. Quick and dirty. I think a lot of fleets use this test method. Edited August 9, 2017 by james j neiweem 1 Quote Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-377056 Share on other sites More sharing options...
Mack Technician Posted August 11, 2017 Author Share Posted August 11, 2017 However today its the dreaded "Chassis Harness of Death". One of my all time favorites. Right up there with splinters under the finger nails! lol Nasty. I want to beat it with a club so it can't harm my children. Quote Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-377178 Share on other sites More sharing options...
fjh Posted August 14, 2017 Share Posted August 14, 2017 Yup Volvo Trash ! Id like to strangle the designer with it! I notice the newer engines have a proper plug at the valve cover thou Step in the right direction, One small step for Mack Kind ! Quote Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-377447 Share on other sites More sharing options...
Mackpro Posted August 14, 2017 Share Posted August 14, 2017 Yup Volvo Trash ! Id like to strangle the designer with it! I notice the newer engines have a proper plug at the valve cover thou Step in the right direction, One small step for Mack Kind ! Yep , the common rail engines have a separate harness under the valve cover. But the chassis harness is still mostly one piece Quote Link to comment https://www.bigmacktrucks.com/topic/50706-cool-engine-trick/#findComment-377462 Share on other sites More sharing options...
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