candygebs Posted September 4, 2016 Share Posted September 4, 2016 Hi everyone, am new here please i need help. My truck suddenly started bringing out white smoke from the exhaust, then it started shooting fire from the exhaust then quenched and has refused to start. We tried hard to start it, it revolves very well but refused to start even when we snuffed it with petrol, i got a mechanic who opened the engine and told me the rings, metals and main bearing was bad and needs to be changed. We changed all these, serviced the injector and noozle, set the timing very well yet engine has refused to start, it revolves very well, does as if it will start when you add petrol once the vaporof the petrol vanishes it keeps revolving. Help as this is my only source of income and this problem is 4 weeks old the mechanics have ran out of ideas. Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/ Share on other sites More sharing options...
mrsmackpaul Posted September 4, 2016 Share Posted September 4, 2016 mate your not getting fuel or at least it sounds like thats the problem What model Mack a picture of the motor will most likely be enough if your not sure Paul Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/#findComment-344528 Share on other sites More sharing options...
candygebs Posted September 4, 2016 Author Share Posted September 4, 2016 5 hours ago, mrsmackpaul said: R model 1985. Its getting fuel, the injector is shooting diesel except the number 2. Please i need solution Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/#findComment-344558 Share on other sites More sharing options...
mrsmackpaul Posted September 4, 2016 Share Posted September 4, 2016 has it run since the rebuild ??? does it have good compression and has the compression been checked ? Paul Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/#findComment-344597 Share on other sites More sharing options...
candygebs Posted September 4, 2016 Author Share Posted September 4, 2016 Since the rebuild it has not run, it cranks very well but will not turn up, when you talk about getting enough compression what do u mean please Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/#findComment-344616 Share on other sites More sharing options...
mrsmackpaul Posted September 4, 2016 Share Posted September 4, 2016 A diesel motor needs compression in the cylinder to burn the diesel , if it doesnt make enough compression the diesel cant burn to make the motor run Do you have any smoke coming out the exhaust ?? Pauk Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/#findComment-344621 Share on other sites More sharing options...
br549 Posted September 5, 2016 Share Posted September 5, 2016 Is that a 2 valve or 4 valve engine, did you have the injection pump off? Is it a Robert bosch pump or a American bosch {United techonolgy} pump. If pump has been off it could be out 180 degree out on the wrong stroke. Also make sure valves have been adjusted on the right stroke. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/#findComment-344631 Share on other sites More sharing options...
mrsmackpaul Posted September 5, 2016 Share Posted September 5, 2016 If this motor turns over really easy maybe the timing is out one tooth maybe check the cam and injector pump are still correctly timed to the crank I guess with out been there its hard to tell but start at the basics and work from there Paul Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/#findComment-344654 Share on other sites More sharing options...
candygebs Posted September 5, 2016 Author Share Posted September 5, 2016 I have smoke coming off the exhaust when u crank it, the timing has been checked, it jumped and was set, yet it didnt turn up. About the pump i dont know the make, am a newbie in truck little knowledge, i just watch these mechanics when they work Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/#findComment-344660 Share on other sites More sharing options...
gearhead204 Posted September 5, 2016 Share Posted September 5, 2016 I would suggest flow timing the injection pump, this should verify that pump to cam timing is correct. as I believe the book takes you thru every step needed to properly set it. Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/#findComment-344667 Share on other sites More sharing options...
mrsmackpaul Posted September 5, 2016 Share Posted September 5, 2016 mate need to put up a picture of the injector pump so people can help you solve the problem if you have smoke coming out the exhaust you have fuel compression must be low make check the valve clearance ? Paul Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/#findComment-344681 Share on other sites More sharing options...
candygebs Posted September 15, 2016 Author Share Posted September 15, 2016 Thanks to everyone who showed concern, finally got the engine started, the injector was not supplying fuel, they had to change shuold i call it injector head, this thing you turn with spanner to check if the injector is supplying fuel. Thanks. The new problem i have now is, yesterday the exhaust brings out huge white smoke, the truck cant run well, when on high gear, and you match the pedal to the floor, the truck wont just move fast, it moves like its on low gear Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/#findComment-345764 Share on other sites More sharing options...
mrsmackpaul Posted September 15, 2016 Share Posted September 15, 2016 You are lacking compression by the sounds of it check the valve clearance if the rest of the motor was rebuilt it doesnt leave much else Paul Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/#findComment-345766 Share on other sites More sharing options...
br549 Posted September 18, 2016 Share Posted September 18, 2016 recheck valve adjustment. About 25 years ago a guy called me and said he just rebuilt his E6300 engine and could not get it running. While the heads off they removed the fuel pump and put the side pan gaskets on. They pulled the truck up the road with a chain for a mile or two and it would not start but had white smoke. I went there and ck the timming and it was timed about 25 degree fast. Pulled the pump and they had missed the pin on the fiber gear by 2 notches. If right the pump will go on flush to the block. They said they use the bolt to pull the pump to block. We re timed the pump to motor and it cranked right up, but the motor had a lot of blow by and puffing real bad with the oil cap off. Pull the heads off and all 6 pistons were melted off. It had done that without the motor running while they were pulling it. Ck your valves but also make sure the timing is set right. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/46699-truck-wont-start/#findComment-346098 Share on other sites More sharing options...
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