xjrev10 Posted February 16, 2014 Posted February 16, 2014 It will start after being plugged in for a few hours, but it will not start cold. It could be 30 degrees and all it will do is crank. Started at -33 below after being plugged in no problem a few weeks ago. After its warm, runs fine. Stumbles a little till its warm. Any ideas on where to start? Brand new plugs, wires, cap and rotor this fall. Fresh gas.
Dillithium Posted February 16, 2014 Posted February 16, 2014 No start can be a lot of things, have you ever done a compression test? Vacuum check? If spark and gas comes in freely and correctly (correct fuel pressure and proper spark plug gapping) then I'd check air. So compression, intake gasket, air hoses, air filter. All that good stuff.
xjrev10 Posted February 16, 2014 Author Posted February 16, 2014 I've checked air box and both lines running too it. The hard plastic line is cracked. Engine has 100k miles. Starts just fine when it's warm is what's throwing me off.
Dillithium Posted February 17, 2014 Posted February 17, 2014 Usually when an engine only starts warm, I'd suspect compression. You could try putting a bit of transmission oil in every sparkplug hole right before you start it cold, if it starts right away then your piston rings are worn.
TheDirtyJeep401 Posted February 17, 2014 Posted February 17, 2014 Do you have straight anti freeze in it or a mix?
xjrev10 Posted February 17, 2014 Author Posted February 17, 2014 No clue. But if it was just water or a bad mix, I think I would have had bigger issues already. It will start cold if I dump gas down the TB. Gotta sit and babysit it till it warms up.
TheDirtyJeep401 Posted February 17, 2014 Posted February 17, 2014 The battery could be low enough to not completely power the fuel pump. My truck almost does the same thing. Takes a bit when cold to actually get running and idle.
xjrev10 Posted February 17, 2014 Author Posted February 17, 2014 Brand new battery. This is my plow truck. I need it too start. And it always does but......obviously not as good or as easy as it should.
TheDirtyJeep401 Posted February 17, 2014 Posted February 17, 2014 Is there fuel injection into the throttle body when cold? Is there spark too? If not then it could be compression, my friends car just lost almost all the compression and it is a pain to start, unless warmed up. Might be wise to do a compression test in the cylinders.
xjrev10 Posted February 17, 2014 Author Posted February 17, 2014 Ok. That's gonna be a 2 man job to do that I suppose. See what I can find out.
JeepcoMJ Posted February 17, 2014 Posted February 17, 2014 Fuel pressure tester, test pressure inline by cycling key and pump. Then hop out and see how quick it bleeds down. If gone immediately, I suspect your injector is stuck partially open and not allowing it to give correct amt of gas on cold startup. Could be compression so that should be checked too.
xjrev10 Posted February 17, 2014 Author Posted February 17, 2014 That was one of my thoughts about the injector. Maintenance hasn't really a top priority.....sorry to say but true.
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