David1994 Posted May 15, 2020 Share Posted May 15, 2020 Ok so i have a 1994 ford L9000 and it will not start... the starter is fine. The truck just won't turn all the way over. Sometimes it will start up and run for a couple hours until it randomly shuts off. The truck has 3 brand new batteries. My coolant and oil is fine. The water separator is also fine. I also just replaced my 2 oil filters yesterday. So what do you pros think? Im not very experienced in working on dump trucks. Quote Link to comment https://www.bigmacktrucks.com/topic/62563-cummins-big-cam-problem-help/ Share on other sites More sharing options...
fjh Posted May 16, 2020 Share Posted May 16, 2020 (edited) Will it still crank but not fire? Edited May 16, 2020 by fjh Quote Link to comment https://www.bigmacktrucks.com/topic/62563-cummins-big-cam-problem-help/#findComment-451272 Share on other sites More sharing options...
Truck Shop Posted May 16, 2020 Share Posted May 16, 2020 An L9000-1994 with a big cam-It should be a N14 or L10. What color is the engine? Black or tan. Quote One ping only Link to comment https://www.bigmacktrucks.com/topic/62563-cummins-big-cam-problem-help/#findComment-451275 Share on other sites More sharing options...
David1994 Posted May 16, 2020 Author Share Posted May 16, 2020 The engine is red but i believe it's an L10. Quote Link to comment https://www.bigmacktrucks.com/topic/62563-cummins-big-cam-problem-help/#findComment-451281 Share on other sites More sharing options...
David1994 Posted May 16, 2020 Author Share Posted May 16, 2020 It cranks no problem. It just won't fire up except sometimes. And when it does fire it doesn't last very long. Quote Link to comment https://www.bigmacktrucks.com/topic/62563-cummins-big-cam-problem-help/#findComment-451283 Share on other sites More sharing options...
Truck Shop Posted May 16, 2020 Share Posted May 16, 2020 Well before we go any further you need to nail down what exact engine you have. Because starting in 94 the L10 became the M11 Celect tier 2 engine, the L10 was mechanical. There should be a data plate on the left front of engine telling you what it is. Quote One ping only Link to comment https://www.bigmacktrucks.com/topic/62563-cummins-big-cam-problem-help/#findComment-451347 Share on other sites More sharing options...
David1994 Posted May 31, 2020 Author Share Posted May 31, 2020 Ok all i see is 300842 on the side of the motor. It is a cummins big cam. It has a cummins PT fuel system and i don't think the electric fuel shut off valve is wired correctly. It only has 1 post on it. Should i rewire that? Quote Link to comment https://www.bigmacktrucks.com/topic/62563-cummins-big-cam-problem-help/#findComment-452399 Share on other sites More sharing options...
Coenut Posted June 7, 2020 Share Posted June 7, 2020 If you screw the thumb screw all the way in it will run. You may have a faulty solenoid. One wire is correct. Quote Link to comment https://www.bigmacktrucks.com/topic/62563-cummins-big-cam-problem-help/#findComment-452793 Share on other sites More sharing options...
david wild Posted June 7, 2020 Share Posted June 7, 2020 On 5/15/2020 at 10:17 PM, David1994 said: It cranks no problem. It just won't fire up except sometimes. And when it does fire it doesn't last very long. Now that sounds like a personal problem. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/62563-cummins-big-cam-problem-help/#findComment-452800 Share on other sites More sharing options...
slingblade Posted November 15, 2020 Share Posted November 15, 2020 Check the fuel shutoff solenoid first,also check the fuel flow using a clear hose to the filter on the pump,if its pulling air in via the fuel pickup in the tank,sometimes they break,sometimes the fuel lines crack inviting air into the system. Quote Link to comment https://www.bigmacktrucks.com/topic/62563-cummins-big-cam-problem-help/#findComment-463884 Share on other sites More sharing options...
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