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Ok, 1990 740T M46 transmission. Funny enough this car got some e85 ethanol added to the tank. About 4 gallons on top of 8 gallons or so of gas. Car ran fine for a few days when half the tank was used. Topped off with gas and car no start. Was able to push start it.
This continued and got worse. Car was ran till tank was on fumes and full tank of gas added, no change. Car had 230,000 miles. Figure some varnish in the tank got cleaned and is now gumming something up. Have replaced fuel filter, Idle air control, AMM swapped out, plugs, distributor checked, etc
The problem when driving is intermittant, can be started with pull starting, sometimes just push starting, or with starting fluid.
You can coast in gear, manual trans, and it will not die, push in the clutch it dies. Will not idle, when it is acting up that is, it requires about half throttle to keep it running. It will vary when driving from running perfectly to trying to die.
When it stops doing it and is running well it will idle just fine.
I heard someone mention here consequences of alcohol in the fuel. ??
I have a walbro fuel pump that I am planning on replacing the intank pump with.
Funny thing is, there is a guy in Sweden who has converted his 740 to E85 with just 30 more fuel flow. Says LH2.4 can run E85 without problems.
Someone has said this has to be a fuel delivery issue and I tend to agree. The intermittant part is confusing though. Advice?
Thank you very much for any help.
Dave
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