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VK EFI Trouble

hey guys i have fitted a vk efi engine into my hj and its starting to give me dramas :( i appear to have fuel going into the cylinder has the sparkplugs are getting slightly wet and i can smell fuel in there and i have checked for spark and i appear to have spark as well. only thing that i can think of is if maybe there is a vaccuum problem. i have blocked off most if not all of the vaccuum lines but still no luck there are a couple of "sensors" on the engine that as a diagram i have shows me that plug into the lines and go off the coolant temp? can anyone tell me if theres something that im missing or if i have to have these connected for it to work?? thanks heaps guys hope someone can help have to move soon and need my baby going...

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i would suggest maybe an injector might be faulty or stuck open, take them out and have a look to see if there dirty.

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If your in Brisbane I can help.......usually it's a process of elimination.

have you had the motor running?
have you exchanged the ecu to check it
have you got the coolant sender,aux vac sender and airflow meter senders attached?
I had trouble with the distributor igniter on mine even though the plugs showed a spark.
Have you looked in Holdenpedia on this site?
also a good idea to check all eath contacts and get your multimeter and check the ecu plug for the correct resistances.

Good luck

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ok thanks ill have a look in the morning thanks heaps..

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if it coughs and then stops look at the MAF sensor (that flap thing bolted to the air box)

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“You'd better send a meat truck. Charlie's copped a saucepan in the throat.”

If the coolant temp sensor is open circuit (for example if the wires were disconnected from it) it will run so rich it will flood the engine and it won't run.

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Cheers
David

aka hq308belmont

My Archived Shed

1.
In addition the Regulator Diaphragm may be perforated spraying Fuel into the Inlet Manifold. Remove the Rubber Hose from the Regulator while the Fuel Rail is pressurised. No Fuel should be coming out of it.

2.
If something is causing the Canister to flood, like you have a big Return Line Problem or the Fuel Tank cannot breathe, then excess Fuel will drawn into the Throttle Body. Disconnect the Canister Purge Line from the Throttle Body and Investigate.

3.
You've interchange the Return Line and the Inlet Manifold Connection on the Regulator. The smallest Connection goes to the Inlet Manifold and the rearmost Connection is the Return Line to the Tank.

4.
The Return Line is blocked causing the Fuel Rail Pressure to skyrocket. Disconnect the Return Line from the Regulator and blow into it. The Return Line *must* be clear.

5.
The Regulator is not connected to the Inlet Manifold via its Rubber Hose causing the Fuel Rail Pressure to double.

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T

My Shed

Holdenpaedia, they're the brakes Mate.

try getting a large hose clip like off a truck air intake or so, wrap it around the computer and the plug and tighten it right up so it holds the plug onto the computer. I had awful trouble with my conversion with similar symptoms to yours and it turned out to be a not quite perfect connection. also you do need those sensors that could cause problems.

johnperth

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Check that the connection is on the Vane Airflow Meter.

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