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I have pulled the Maverick from the Gas shop and am now having our mechanic check it over as now its quite bad missing across a few cylinders and stalled 2 times whilst pulling away on a hill.
No leaks
new leads
new plugs
new oxy sensor
cleaned Map sensor
cleaned in dizzy under plate
cleaned rotor button
cleaned dizzy cap
Timing set 10 degrees
Fuel injector plugs all checked and refitted securely.
What was the compression reading on all cylinders? Another component that is common to both fuels is the changeover switch. Check that the wiring and connectors are crimped tight. You could bypass it to eliminate that the internal contacts aren't loose.
Ignition died found the coil to be the culprit, fitted new coil and started straight away still missing and hunting at idle on both fuels.
compressions all around 150. dual fuel switching all good.
Clutching at straws now, but, next component common to both fuels is the carby. Running gas, can dry out the seals and such inside it and cause trouble can't it?
It is fuel injected.
Yeah, I forgot. sorry. Haa ha. Its such a common problem with gas. Thinking cap back on... You've cleaned the dissy. Are to able to swap it with someone elses, just to eliminate it entirely? As years ago my falcon had an intermittent miss, and I found it had tracked a long some almost invisible fine cracks.
Done that no difference.
I am out of Ideas, sorry, Pezzer. I have owned two efi vehicles, and they either ran really well, or not at all.
Did you replace the collector gasket when you had it all apart? Ie split the big intake plenum apart and replace the gasket? Is it possible you've hooked the vacuum lines up incorrectly? Does the air regulator on the bottom of the plenum appear to have any leaks? Have you cleaned the aac valve assembly on the back of the plenum?