Moparmike Posted February 11, 2017 Share Posted February 11, 2017 My truck I just got 2000 mack rd688 e7 400 has 380xxx miles should I have the lash set or checked..quad dump truck 1 Quote Link to comment https://www.bigmacktrucks.com/topic/48699-run-the-valves/ Share on other sites More sharing options...
0 Dirtymilkman Posted February 11, 2017 Share Posted February 11, 2017 On those etech engines I set the valves and replace injectors every 250,000 miles. If it was done once you should be good for awhile. Valve set is as easy as it gets on those motors and stage 2 injectors are about $160 a piece. Quote Link to comment https://www.bigmacktrucks.com/topic/48699-run-the-valves/#findComment-361352 Share on other sites More sharing options...
0 Dirtymilkman Posted February 11, 2017 Share Posted February 11, 2017 Also replace the short injector lines from the unit pumps to the injectors. That'll save headaches down the road. I also replace the fuel return line at the same time. That's just a plastic line that runs from the front of the heads to the bottom of the block. They are prone for wearing through. It'll all cost about $1500 but you'll have a million Mile rig and maintain power and economy. Quote Link to comment https://www.bigmacktrucks.com/topic/48699-run-the-valves/#findComment-361353 Share on other sites More sharing options...
0 Moparmike Posted February 11, 2017 Author Share Posted February 11, 2017 Thanks guys ..injector look like there not very old 1 new line on back from injector to line..what's the oil of choice for macks ..I use Rotella in my cummins .. Quote Link to comment https://www.bigmacktrucks.com/topic/48699-run-the-valves/#findComment-361355 Share on other sites More sharing options...
0 hatcity Posted February 11, 2017 Share Posted February 11, 2017 8 hours ago, Moparmike said: Thanks guys ..injector look like there not very old 1 new line on back from injector to line..what's the oil of choice for macks ..I use Rotella in my cummins .. I run Rotella 15-40 ONLY 1 Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment https://www.bigmacktrucks.com/topic/48699-run-the-valves/#findComment-361364 Share on other sites More sharing options...
0 Dirtymilkman Posted February 11, 2017 Share Posted February 11, 2017 Nothing but Rotella Quote Link to comment https://www.bigmacktrucks.com/topic/48699-run-the-valves/#findComment-361391 Share on other sites More sharing options...
0 MACKTRUCKS4 Posted February 11, 2017 Share Posted February 11, 2017 Rotella. Also watch the allen bolts that hold the unit pumps in, pron to braking. Service bulletin for that says to replace bolts when doing pumps. I had 2 pop around 300,000 miles. Quote Live every day like it's your last, because one of these days, it will be. Link to comment https://www.bigmacktrucks.com/topic/48699-run-the-valves/#findComment-361426 Share on other sites More sharing options...
0 Underdog Posted February 12, 2017 Share Posted February 12, 2017 Not gonna start an argument about oil, but had bad experience with rotella in my E9 years ago, switched to Mobil Delvac and been running that with good results in all my Macks ever since. Buy a good quality name brand and stick with it. Quote Link to comment https://www.bigmacktrucks.com/topic/48699-run-the-valves/#findComment-361472 Share on other sites More sharing options...
0 BillyT Posted February 13, 2017 Share Posted February 13, 2017 Can't say enough about Rotella 15/40! My diesel mechanic cousin recommended it to me in 1978 and I've used it in every internal combustion engine I've owned except for two Corrolas my wife bought new that required 5/30 and ow20 to preserve the warranty! Quote Link to comment https://www.bigmacktrucks.com/topic/48699-run-the-valves/#findComment-361565 Share on other sites More sharing options...
0 hatcity Posted February 13, 2017 Share Posted February 13, 2017 23 hours ago, Underdog said: Not gonna start an argument about oil, but had bad experience with rotella in my E9 years ago, switched to Mobil Delvac and been running that with good results in all my Macks ever since. Buy a good quality name brand and stick with it. Chevy? Ford? Dodge? Mercury? Yamaha? Suzuki? Evinrude? Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment https://www.bigmacktrucks.com/topic/48699-run-the-valves/#findComment-361570 Share on other sites More sharing options...
0 Underdog Posted February 14, 2017 Share Posted February 14, 2017 Chevy? Ford? Dodge? Mercury? Yamaha? Suzuki? Evinrude?My E9 used a gallon every 3000 miles on rotella. Switch to Delvac, oil consumption went away. Just my experience. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/48699-run-the-valves/#findComment-361666 Share on other sites More sharing options...
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Moparmike
My truck I just got 2000 mack rd688 e7 400 has 380xxx miles should I have the lash set or checked..quad dump truck
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