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Hello, thank you for that...ok well the engine may be compensating for loss of boost and not over fueling causing black smoke.. So as far as boost loss..we want to start at the air cleaner make sure its clean, from there we would look at the piping and any hoses to the turbo, any hard bends or smashed would cause restriction, also if the hoses are to soft they can colapse... the turbo blades need to be inspected for damage and see if its spinning freely, with little play. out of the turbo, we want to check any and all piping for leaks going to the cooler and also back to the intake, ( the intake is were the boost sensor will be) .. The best way to check this piping for boost leaks is to make up a spray bottle of soapy water... in small sections, spary down the pipes and have someone run up the throttle and look for bubbles, these would be boost leaks.. check all the hoses and the cooler at seams in small sections, till you check it all.. this is were I would start.. when you get the ser# XXXXX can take a closer look too..let me know
Thank you for the info and what to look for. The first thing I did was change the air filter and crossed my fingers for improvment. I now have more things to look into and i will get the ser # XXXXX today. However I will accept your information and start the hunt.
Thank you for your time.
Ok , Very welcome..yea just reply back when you can its 1030 at night for me but I will check back in the AM..
Hi Tim here is the ser # XXXXX MFG Date 10/96 sold to Monaco Coach co. Cummins M11 450E
Hello, Thank you for that.. I will be able to look some things up knowing its a M11 but any chance you could get me the engine ser# XXXXX will just be a 8 digit number...did you have a chance to look at the things I spoke of before.. because they will be your most likley...I am almost off work and will have more time in about a hour..
ok I have the numbers 34839377 The soap trick works there is a leak where the tubing flares out to the radiator. it appears that the unit has had problems here before as there is alot of rubber type sealant at this junction. the 7 rubber boots do not leak and do not appear to be collapsing.
Ahhh.. that sounds like it that is your air cooler, thats were you are loosing the boost then and under a load it would even be worse.. some places can repair them , but normally its just replace. either way it will have to come out....good job on finding it..