Replaced head gasket, new injectors... Not starting

[cerberusiam]

You still never answerd the question if you run a hot jumper from the battery to the fuel shut off relay will it fire and run ?

Post #15. He got it to run by powering the solenoid from the battery.

 

[berksbr]

Yeah with the jumper hooked up she fired right up.

Going to look at the wiring diagram in my chilton and see if that helps. Checked all the fuses, good there. Conceptually not grasping how its wired yet... It worked before I tore the truck apart so pretty good chance I dont have it together correctly

HHuntitall if you are able to look at your truck and give me a few more specifics regarding the fuel shut off solenoid that would be great. Going to look at it this weekend

 

[cerberusiam]

Make sure the plug on the end is making connection with the wire, they will break th ewire in the plug and you have no continuity. If in doubt, cut the old end off and crimp\solder a new connector on it.

Also check for a broken wire between the pump and the main harness. It is not uncommon for them to get pinched and break the wire somewhere.

 

[DVolk]

get a can of electricle cleaner and clean your connections

 

[HHhuntitall]

Good suggestion, cerebrusiam. Get a test light and test the blue wire starting from the pump end, then at the black plug, then the other side of the plug. If you don't have fire there, I'd go to the firewall, and check at the fusible links. There are five on my '93.

The black wire here goes to the air temp sensor to activate the KSB, if it's cold enough. It draws fire from the the start solenoid, so it won't work if there is no fire to the pump through the blue wire.

You can see the blue wire in the black plug. This is attached to the block behind the fuel filter.

This beauty is usually where the problem lies..... but it's last on the list as it's upstream.

 

[berksbr]

Well this hurts to say but I stand by my word that I would update my progress... HHuntitall's pictures were all I needed. That little blue wire that goes onto the fuel shut off solenoid I had connected to the KSB!?!?!?!?!? Oh the joys of learning can be frustrating... Its tuff when you tear something apart for the first time, like 6 months ago, to remember where some of the simpler things go. Next project i am taking pictures with a digital camera!

Thank you again, and if nobody wants to answer this last question I completely understand

Would going from a 18cm to a 16cm turbo housing honestly make that much of a difference with turbo lag? Seems with the new Bosch 190's injectors I have some added turbo lag.

 

[HHhuntitall]

First off, are you sure you have an 18cm housing? Just asking..... If you do, a 16 will help with the turbo lag quite a bit, IMO. I think upgrading to an HX35 is pretty easy, and seems to work pretty good. Lots of people have their own opinion, tests, documentation, dyno-maps, power-point presentations, and "gut feeling" on turbos. Get ready... ... . :-laf



Glad the pics helped.....

 

[cerberusiam]

If you never work on anything you never make mistakes and learn. We all do it and learn from the experience.



A 16 housing helps some, a 12 cm waste gated housing helps a lot more.



Bigger injectors will help spool, given the pump and timing are capable of utilizing them. If you loose spool and bottom end with the bigger injectors you need to adjust fueling, timing, or low\no boost fuel.

 

[STeichert]

Glad you got it going! I like the 12 cm better than the 16.