Nissan navara won't start

[cnc.cpt]

My navara stopped running. Used to struggle with cold start. Head gasket and rings were redone thinking that is the problem because they were finished. Now I still have the same problem after doing the motor over.

Big problem is the motor turns over slow even with help after a bit and a brand new starter. The starter gets extremely hot and the jumper cables get extremely hot. There is about a 5 to 7 volt drop at battery when cranking.

Sounds like it wants to start then it starts cranking slow like not enough power as I say even with a running diesel vehicle jumping me.

Im at a loss.

 

[tweak'e]

what navara model and what engine?

 

[cnc.cpt]

Sorry didn't mention. 2008 yd25

 

[dattorob]

maybe eliminate some variables to begin with. For example (not sure if possible with diesel engine) use a 3/4" torque wrench to turn the engine by hand using bottom pulley and measure the force, compare this to a similar sized diesel vehicle of a friend. If the values are the same then al least you know internally the engine is ok, and the extra resistance or starting problems are external e.g. starter, battery, ring gear mis-alignment or damaged ring gear.

 

[rsgooch]

If what dattorob said shows some resistance. You may want to make sure your timing chain and guides are ok.

 

[Old.Tony]

Sorry I'm late to the party here.

I'd remove the glow plugs and use the starter to turn the engine over. It should crank freely. Use the opportunity to see if there's any fluid inside the combustion chamber. Checking the glow plugs' tips will help.

Hot jumper cables just mean that you're cranking too long. These engines should be pulling 500 to 550 amps when cranking, so even a V8's jumper cables (which draw around 300-330A to start) will start heating up under extended use on a diesel.

Starting issues are almost always fuel/timing related, because even with a broken turbocharger there's still enough air getting through to allow combustion.