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Message: <blockquote data-quote="Shanmar" data-source="post: 138476" data-attributes="member: 21969">The grid heater is in a block right on top of the intake manifold. But, that's not your problem. The grid heater isn't needed until below freezing--and usually very freezing.Yea, so no milky oil significantly reduces the chance of coolant leak.So, thinking about the fuel supply--I'd say make sure you're getting good supply to the injection pump is the next step:- lift pump pumping well? strong flow to injection pump?- fuel filter?- fuel filter head - One time, my LS180 acted like the filter was plugged--changed filter--no change--ended up taking entire fuel filter housing off and cleaning out all the passages. There was some fine fiber material hung up in it plugging it. Don't how it got there, but it was the problem.- also had a pickup tube in tank get plugged on another machineOther thoughts/ideas/questions:- Something funky with the "fuel shutoff solenoid (guts removed)"??- Could pull injectors and do compression test.- Slipped timing could allow it to turn over easier and not run well. - Connection between turbo and intake manifold in good shape?- Air filter? (Not likely, but had to ask--know a farmer who had dealer pickup his skid loader and haul it in because it wouldn't start--solution--air filter)- When all ideas exhausted, left with taking injection pump and injectors to an injection pump shop.</blockquote>