Non starting kjet / dissy advance?

**Golf Loon** · 17-03-2006, 06:58 PM

So I have a kjet engine that will not start.
It has good compression, spark and fuel to the fuel distributor.
I have tried spraying start u bastrd into the inley manifold and cleaned the plugs. Nothing.
Any ideas guys?

imported_brackie · 17-03-2006, 07:34 PM

Bring it to TDC and pull out #1 plug lead or remove and earth the plug. Turn the motor by hand and make sure it sparks at the right time. If it does, this eliminates timing as the problem.
Pull an injector and with the ignition on and the throttle plate open you should have fuel.
If there's fuel, a spark at the right time, and compression the bloody thing should run! (Well, it got past the Oz censors!)

**Golf Loon** · 17-03-2006, 11:10 PM

Bloody oath! I`m onto it first thing in the morning. Thanks mate.
Back to basics.

**Golf Loon** · 19-03-2006, 06:49 AM

So I set the timing to TDC and now it makes noises. It turns over and just as it catches and is about to go, it dies. If you open the throttle, it dies. I`m thinking insufficient fuel pressure?

Does anyone know wheather it`ll run without vacuum advance?

I`m gonna go and try changing the pressure accumulator and the cold start valve.

syncro · 19-03-2006, 10:04 AM

Disconnect vacuum advance and plug the hose, then set timing to around 6 BTDC. Timing like that will be 95% OK.

**Golf Loon** · 19-03-2006, 10:35 AM

Originally Posted by syncro

Disconnect vacuum advance and plug the hose, then set timing to around 6 BTDC. Timing like that will be 95% OK.

Thats Gold mate, cheers. This is a 16v Kjet motor and if i dont need the vacuum advance, it means that I can use the simple GTI injection system with no computer!

**Golf Loon** · 19-03-2006, 10:38 AM

It Goes It Goes!

Changed the pressure accumulator and the fuel fileter, still didn`t work. Then I realized the very quiet fuel pump was in fact the non working fuel pump!

Hooked up a wire to the pump and car started. Now I have to sort out the fuel pump replay and about 20 other little things which are not connected.

It sounded real beefy though, I cant wait to go for a spin in the sucker.

**Golf Loon** · 19-03-2006, 06:18 PM

Ok the car starts and runs, still cant drive as I cant find a clutch cable connector, very annoying.

Having spoken to a couple of you, Syncro, Steve and DOHCDave, i still have questions.

I am running a KR 16v motor with kjet injection and no vacuum advance, and there seems to be some debate as to whether there is mechanical advance in the dissy or not. Again does it matter? The motor free revs to the redline and sounds fine, will it have any impact when driving? or does it not matter?

Anyone have any answers?

I have the harness etc to hook up a computer, but this car was already kjet and it was heaps easier to just hook up what was there. All the connectors matched up and as I say it seems ok.

syncro · 19-03-2006, 07:46 PM

There is no computer for K-Jet. The computer is the advance for the distibutor for a 16V.

**roccodingo** · 20-03-2006, 07:33 PM

Originally Posted by syncro

There is no computer for K-Jet. The computer is the advance for the distibutor for a 16V.

yep, syncro is right, engine spark advance is taken care of by the engine management computer and a knock sensor + control box if fitted ( US spec PL engines etc..)

you can retrofit the knock sensor to earlier 8 valve engines also, giving you more initial advance ...