steeler Posted January 10, 2015 Share Posted January 10, 2015 Something to think about, Remack basics don't come with injectors in them. So you could have the originals still in there if they weren't replaced with the engine. Quote Link to comment https://www.bigmacktrucks.com/topic/38002-lethargic-mechanical-e7-350/page/2/#findComment-273737 Share on other sites More sharing options...
masterwelder Posted January 11, 2015 Author Share Posted January 11, 2015 It had been cold here the last few days. Yesterday I needed the truck and it was plugged it but my timer is only set to come on during the weekdays. Anyway about 7 degrees, truck fired right up.It does run ok. Turning the puff limiter screw made a big difference. Eventually I will have to address the pump form the sounds of it. Quote Link to comment https://www.bigmacktrucks.com/topic/38002-lethargic-mechanical-e7-350/page/2/#findComment-273917 Share on other sites More sharing options...
M54A1 Posted December 10, 2017 Share Posted December 10, 2017 I know this is an old thread, but my truck is doing the same thing. I have a 97 CH613 with a mech. E7 350hp. Only has a slight skip at light throttle and idle, and seems to get worse an engine temp increases. I have already set the valves and had the injectors rebuilt, and no change. I don't know whether to pull the pump and have it checked, or do a compression test, or check for cam lobe wear. Just looking for some advice and to see if the OP got his truck fixed. thanks Quote Link to comment https://www.bigmacktrucks.com/topic/38002-lethargic-mechanical-e7-350/page/2/#findComment-387125 Share on other sites More sharing options...
cstaples Posted December 16, 2017 Share Posted December 16, 2017 Let us know what you found or find out, I have a '97 mechanical E7 with the exact same symptoms! Thanks, Chris Quote Link to comment https://www.bigmacktrucks.com/topic/38002-lethargic-mechanical-e7-350/page/2/#findComment-387558 Share on other sites More sharing options...
M54A1 Posted March 27, 2019 Share Posted March 27, 2019 I'll give my update. I set the valves, had the injectors rebuilt, and had the pump rebuilt. At 1400-1600 rpm my truck still has a bad flutter/miss and reminds me of a helicopter, but only in a light load situation. I don't know what else to check for or try. Anymore advice or updates? Quote Link to comment https://www.bigmacktrucks.com/topic/38002-lethargic-mechanical-e7-350/page/2/#findComment-419106 Share on other sites More sharing options...
JoeH Posted March 28, 2019 Share Posted March 28, 2019 I had a slight miss on my 95 e7-350 last year, 2nd set of fuel filters cleared it up. Almost sounded like the Jake brake was engaging at higher (15-1600) RPMs. Pulling the Jake wires off the heads eliminated that possibility. First set of fuel filters made it good for a day or two, second set made it go away, hasn't happened since. 18,600+ hours, 250,000 miles, original engine, never rebuilt that we know of. Only ever get 26 psi boost out of it, would love to know how you guys get 30+ psi! This dog is no maxidyne, we thought there was something wrong with the engine because it just didn't pull like we thought a Mack 350 should. But we had only ever driven endt676 maxidyne 2 sticks prior, and this truck makes the same boost they made. We just had to get used to a totally different power band. Quote Link to comment https://www.bigmacktrucks.com/topic/38002-lethargic-mechanical-e7-350/page/2/#findComment-419183 Share on other sites More sharing options...
Glensts Posted March 30, 2019 Share Posted March 30, 2019 On 3/27/2019 at 6:21 PM, JoeH said: I had a slight miss on my 95 e7-350 last year, 2nd set of fuel filters cleared it up. Almost sounded like the Jake brake was engaging at higher (15-1600) RPMs. Pulling the Jake wires off the heads eliminated that possibility. First set of fuel filters made it good for a day or two, second set made it go away, hasn't happened since. 18,600+ hours, 250,000 miles, original engine, never rebuilt that we know of. Only ever get 26 psi boost out of it, would love to know how you guys get 30+ psi! This dog is no maxidyne, we thought there was something wrong with the engine because it just didn't pull like we thought a Mack 350 should. But we had only ever driven endt676 maxidyne 2 sticks prior, and this truck makes the same boost they made. We just had to get used to a totally different power band. 95 e7-350, also only 26 lbs of boost. Pulls good tho. Our 427's get over 30lbs. 23000hrs on the 350. Only time I've ever remember a flutter issue the the throttle threw a code and had to replace the foot pedal Quote Link to comment https://www.bigmacktrucks.com/topic/38002-lethargic-mechanical-e7-350/page/2/#findComment-419384 Share on other sites More sharing options...
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