Ahubbard

I had the same problem on my em7-300. It was right around 1200 Rpm. Foot lightly on throttle. Would miss or sort of “gallop” I kind of describe it. Almost felt like it had way to light of a return spring in the throttle, but that wasn’t the problem. Eventually over time it got worse and did it in a broader rpm range. And even got to the point of doing it under load some when I let it get real bad. I changed the pump for a reman because the diesel shop thought it was in the governor. Swapping the pump cured it. can’t say if you have the same problem as me but sure sounds it. Would only do it when for instance I would coast down into a 35mph zone without downshifting, and then just give it slight throttle to keep it moving through the zone at about 1200rpm or so. Didn’t do it on the coast down, or when I gave it real throttle to speed up. Just that light pedal push at that rpm.

Can you pressure the coolant system to check for leaks? My buddy’s was pushing coolant when loaded. Especially when pulling a hill. That ended up being a head gasket. Pressurize the coolant system and see if you hold pressure or lose it somewhere. I have.l a feeling if the air compressor is the problem it would push coolant loaded or empty, and do it when the compressor is kicked in pumping. Sent from my iPhone using Tapatalk

You are making pressure somewhere then. I leave my bottom one empty and top one filled and the bottom Stays empty. But if I put coolant in the bottom one it will come out that weep hole and cover the side of motor. Like it siphons itself out Sent from my iPhone using Tapatalk

My 99 rd used to push coolant out the small hole in the cap. I have the 2 piece tank and now I leave the lower tank empty. No problem any more. Sent from my iPhone using Tapatalk

No I hacked that harness up when I swapped in the mechanical . Sorry Sent from my iPhone using Tapatalk

Is this normal and I just never heard it before? I’m the past year I have: New tank New fuel lines Reman injection pump Reman injectors New return lines. Reman cylinder heads Only thing not changed in the fuel system is injector lines and fuel filter heads. I think I am just hearing the lift pump or the overflow noise reverberating through the line. But this is a first for me. It’s pretty pronounced. Made me think the reman pump has a defective lift pump or overflow. Don’t want to spend the money to replace either just to find out it’s normal Sent from my iPhone using Tapatalk

They look real similar except the low lows. My Mll trans is same ratios as the 14909all below in your pic. The 310mlr and 9LL Have almost exact same ratios. I have 4.42 rear as well. I was paying attention to my driving after thinking about your question. I find that I don’t rev real high in the lower gears. Actually kind of lug a little until I am On the high side. I was thinking back and I wasn’t a fan of how this trans shifted when I still had my etech in front of it. Seemed like in the lower gears it didn’t respond well enough to lug it like I do now. Had to lay into it a little and get the rpms up to have enough power to get her moving. Then was too fast for next gear shift. Just like you describe. The mechanical e7 changed my opinion of the tranny all together. Has the low end grunt now to drive it in the right rpm. Maybe Mack technician is on to something with a different rear ratio. (Although I recommend full mechanical e7 swap). Sent from my iPhone using Tapatalk

Maybe this will work. Sent from my iPhone using Tapatalk

Ever since the new injection pump I get a real loud ticking through the return line can be heard in the tank. I am wondering if it is that overflow valve on the pump? I don’t remember ever hearing this before. I am trying to attach a video but don’t know how Sent from my iPhone using Tapatalk

They might be a little blurry because they are screen shots of some weird pdf site. Here is the regular M. Ratios more like a 8ll. Sent from my iPhone using Tapatalk

I found this online. Hopefully this helps. These ratios are real similar to my 9LL Sent from my iPhone using Tapatalk

Got this done the other day. Just like you said everything was in place as far as plug ins on the switches. The dang wiring was run right to the heads!! Super easy. Already turned on in the ECM as well. Total plug and play. Thanks Mack!! Sent from my iPhone using Tapatalk

Wish I had multi speed reverse... Sent from my iPhone using Tapatalk

I am not sure what you mean by transfer power. But I think that transmission has a real low low like 26:1. I looked it up once on ratios it is similar to my rto-14909MLL road ranger. There is a lot of gears in the low geared area and the reverse is geared low too. My truck is a dump but started out as a concrete mixer. I think the lowest gear is to walk with a curb machine when pouring concrete. I know my dump works great under a milling machine. Similar to an 8ll but extra low in the low gears. Sent from my iPhone using Tapatalk

Next thing on the list for my e7 pln engine is cylinder heads. When I replaced the exhaust manifold I see that there is a pretty good amount of oil leakage around the valves. I quoted a local shop and they were at nearly $1900 per head. Exchanging for Remack is coming in at about $1100 per. I always remember thinking Remack was high quality. Is this still the case? I don’t do enough mechanic work to be “in the know” on this. What your guy’s thoughts and opinions on Remack? Sent from my iPhone using Tapatalk