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Thread: D1 V8 LPG - can I adjust for more petrol to squirt in on startup?

  1. 6th March 2011, 02:27 PM #1
    Young Angus's Avatar
    Young Angus
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    D1 V8 LPG - can I adjust for more petrol to squirt in on startup?

    My D1 V8 LPG gas system runs well but it just takes a while to start from cold if it's starting on petrol, probably a little under six or seven seconds of straight cranking before the motor kicks over. Someone even told me that you can turn the key back to the off position and on a few times over so more petrol gets pumped in somewhere to prime it better but I've tried it and no different. If the car was last used on petrol and is starting again on petrol it starts first time no problems. I just can't help thinking that it should be starting just the same on gas because I thought it starts on petrol anyway for a brief moment and then switches itself over to gas.

    Is there somewhere I can adjust the amount of petrol that gets squirted in at startup so that it starts quicker?

    Here are some pics of my gas system:



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  2. 6th March 2011, 02:57 PM #2
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    Your injector cut relay is cut into the wiring harness between the injectors and the ECU. It could be anywhere along the loom, inside or outside the dash. Have a look along the main harness from the drivers side back of the engine through the firewall and under the dash until you find suspicious amounts of electrcal tape and follow strange wires leading off to little plastic boxes etc. You are standing too far back from the engine when you take pictures like that. You need to get close enough to bang your head on the bonnet and go cross-eyed. Then feed your head under the dash until you can smell the lucas smoke dribbling out of the wires. Take a torch, sorry I can't give you a map on how to look.
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  3. 6th March 2011, 05:22 PM #3
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    Can't help with the gas as when I had Gas on my V8, I never had a problem, Bee utey made sure of that.
    I can however recommend you change your coolant reservoir to the aftermarket clear or custom aluminiium ones as the original black one you have tends to crack at the most inconvenient times and I also can't find a low cooolant alarm which is almost more important than the air in your tyres.

    Low coolant alarm has saved my 2 week old 4.6 RRC twice when I changed all the hoses but never tightened two up properly.

    I swear by them as they are cheap and go off as soon as coolant is low not empty.

    Yeah baby-they are gold.
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  4. 6th March 2011, 07:36 PM #4
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    Have a look at your gas gauge/switch, some have the petrol start built in and are adjusted via a trimpot on the back of the unit.
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  5. 12th March 2011, 07:10 AM #5
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    Well I just got my truck back from the shop and they ended up replacing the LPG converter, said it was just old and full of wax therefore running lean and not properly...hence the problems on cold startup. I have yet to test the cold gas startup thing to see if it works but hopefully it does.
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