KBUCZYNSKI523 Posted August 12, 2013 Share Posted August 12, 2013 i have a 2002 mack freedom xxlwith renulat engine.its a 24ft box truck with manual trans milage is 298,987 milesthis truck was sitting for around 2 years and it started right up some smoke came out buti fugured it was normal for a truck that didnt move for 2 years and nowi am getting a lot of black smoke at acceleration. idles fine with no smeke when iaccelerate it gives off black smoke. i have chacked everything i can think offinjectors were pulled out tested all good. new fuel air oil filters everything was changedturbo is new. i looked for boost leaks everything is good. the EGR is clean. it also has low power it and the only thing i can think of that i didnt change is the injector pump. if any one could help me out i would be really thankfull i know that this truck is not very popular and there are not many out there. is almost impossible to fund someone who knows about this engine, thank you Quote Link to comment https://www.bigmacktrucks.com/topic/32306-mack-freedom-xxl-please-help/ Share on other sites More sharing options...
Eastcoastdiesel Posted August 13, 2013 Share Posted August 13, 2013 Fuel pump, bap sensor, does it have any sort of misfire? Usually fuel pressure does what you are Talking about. Quote Link to comment https://www.bigmacktrucks.com/topic/32306-mack-freedom-xxl-please-help/#findComment-199658 Share on other sites More sharing options...
thomastractorsvc Posted August 14, 2013 Share Posted August 14, 2013 Check your air filter and pipe, if it has set awhile maybe something moved in and is restricting air flow. Do you know why it was parked? Quote Robert"I reject your reality and substitute my own." Link to comment https://www.bigmacktrucks.com/topic/32306-mack-freedom-xxl-please-help/#findComment-199714 Share on other sites More sharing options...
Dana Tucker Posted August 17, 2013 Share Posted August 17, 2013 Black smoke oil, white smoke diesel? Quote Never Forget, You As A Driver and You Alone, Will Stand Before The Judge, For Your Actions Behind The Wheel! ChristianTruckersForum.Net Link to comment https://www.bigmacktrucks.com/topic/32306-mack-freedom-xxl-please-help/#findComment-200268 Share on other sites More sharing options...
farmer52 Posted August 17, 2013 Share Posted August 17, 2013 Black smoke oil, white smoke diesel?Black smoke = partially burned Diesel fuelWhite smoke = unburned Diesel fuel or waterBlue smoke = oil Quote Ken PRR Country and Charter member of the "Mack Pack" Link to comment https://www.bigmacktrucks.com/topic/32306-mack-freedom-xxl-please-help/#findComment-200269 Share on other sites More sharing options...
Dana Tucker Posted August 18, 2013 Share Posted August 18, 2013 Black smoke = partially burned Diesel fuelWhite smoke = unburned Diesel fuel or waterBlue smoke = oilThanks Farmer52. Quote Never Forget, You As A Driver and You Alone, Will Stand Before The Judge, For Your Actions Behind The Wheel! ChristianTruckersForum.Net Link to comment https://www.bigmacktrucks.com/topic/32306-mack-freedom-xxl-please-help/#findComment-200338 Share on other sites More sharing options...
KBUCZYNSKI523 Posted August 20, 2013 Author Share Posted August 20, 2013 Thank you very much for your help after going over everything again I still have the same issues and I managed to find a used injector pump. There are 2 pressure sensors located on the top of the pump. I was woundering if I should just swich the 2 sensors or vhange the entire I jector pump. The truck starts without any problems. And runs perfect at idle. When driving it has a slight misfire and with full throttle it still smokes black smoke a lot Quote Link to comment https://www.bigmacktrucks.com/topic/32306-mack-freedom-xxl-please-help/#findComment-200791 Share on other sites More sharing options...
countryboy5487 Posted September 3, 2013 Share Posted September 3, 2013 I would say change the two sensors first sence they are going to be easier to change the the pump and see if it makes any difference. If it does there ya go if not well you have to change the pump anyway. Are any lights on in the dash? Also you say it has low power, is this low power constant or just when your accelerating and the truck is black smoking? If so then your wastegate could be opening and releasing your boost psi. Now im assumeing your truck has a wastgated turbo im not real fermiliar with the renault stuff Quote Link to comment https://www.bigmacktrucks.com/topic/32306-mack-freedom-xxl-please-help/#findComment-203466 Share on other sites More sharing options...
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