Hi guys. I’m really at a loss and need some help.
I’ve been working on a huge project rebuilding and swapping a 12HT into my 40.
Today I finally fired up the engine in the car for the first time.
Important info: I converted the truck to 12V, glow screen isn’t hooked up, and the starter is a new manufactured non Toyota 12V unit for a 12HT.
Problem #1: Shrieking and engine load:
The truck fires up quickly after cranking for about 3-4 seconds. The engine doesn’t idle comfortably. You need to give it burst of throttle to keep it alive. It feels like it’s under load from something, despite the transmission being in neutral and the tcase being in neutral.
Once the throttle is released, the engine slows and then there is a terrible shrieking sound like a bad pulley before the engine abruptly stops. It’s almost like it’s being stalled out.
From my testing, it sounds like the noise is coming from the starter potentially.
My thoughts: could the starter be seizing and not retracting, adding drag to the engine and then as idle slows it kills the motor and shrieks?
My plan: I’m going to loosen all belts and pulleys to eliminate them as potential causes. I’m going to manually turn the crank and see what I hear. I’m going to bench test the starter, and if absolutely necessary I’ll pull it off, put on a 24V one and test with that one.
Thoughts?
Problem #2: It took a while to prime the injectors, but after a while I was seeing a thick spray of diesel mist coming from the engine bay. Even with a light I couldn’t pin-point the source. There is lots of fuel collecting on top of the block under each injector. I can see the return fuel line leaking despite being past factory torque spec. The rubber isolators between the injector body and block are also leaking fuel with air. You can see little bubbles coming around the seams of some. All nuts are torqued to spec. Thoughts?
I’ve been working on a huge project rebuilding and swapping a 12HT into my 40.
Today I finally fired up the engine in the car for the first time.
Important info: I converted the truck to 12V, glow screen isn’t hooked up, and the starter is a new manufactured non Toyota 12V unit for a 12HT.
Problem #1: Shrieking and engine load:
The truck fires up quickly after cranking for about 3-4 seconds. The engine doesn’t idle comfortably. You need to give it burst of throttle to keep it alive. It feels like it’s under load from something, despite the transmission being in neutral and the tcase being in neutral.
Once the throttle is released, the engine slows and then there is a terrible shrieking sound like a bad pulley before the engine abruptly stops. It’s almost like it’s being stalled out.
From my testing, it sounds like the noise is coming from the starter potentially.
My thoughts: could the starter be seizing and not retracting, adding drag to the engine and then as idle slows it kills the motor and shrieks?
My plan: I’m going to loosen all belts and pulleys to eliminate them as potential causes. I’m going to manually turn the crank and see what I hear. I’m going to bench test the starter, and if absolutely necessary I’ll pull it off, put on a 24V one and test with that one.
Thoughts?
Problem #2: It took a while to prime the injectors, but after a while I was seeing a thick spray of diesel mist coming from the engine bay. Even with a light I couldn’t pin-point the source. There is lots of fuel collecting on top of the block under each injector. I can see the return fuel line leaking despite being past factory torque spec. The rubber isolators between the injector body and block are also leaking fuel with air. You can see little bubbles coming around the seams of some. All nuts are torqued to spec. Thoughts?
