Is this the VV variable venturi carb ?
Hello Lange Lawerence,
It was a difficult time for AMERICAN cars...
Assuming the engine is in decent shape with EVEN cylinder pressures... (else compression test first)
- The IGNITION Control Module in those cars was not
particularly ROBUST... You might consider keeping a
KNOWN SPARE... in the vehicle (in case you ever plan
on taking a serious drive (ICM))
1981 LINCOLN MARK VI 5 0L 302cid V8 Ignition Control Module ICM RockAuto
Details
More Information for STANDARD MOTOR PRODUCTS LX211
Fresh FUEL (ALWAYS)...
I always recommend checking all your
FIRE & FUEL... You did not say... CARBUETOR
or FUEL INJECTION.... IN EITHER CASE cleaning
and/or REPLACING might be necessary to assure proper ATOMIZATION of the FUEL entering the cylinders
1981 LINCOLN MARK VI 5 0L 302cid V8 Fuel Injector RockAuto
Make sure your spark is active (simple test light
going around the cylinders)... Timing, new plugs
and FRES FUEL... (timing light... of course)
AFTER that you will need to check your FUEL FLOW
and PRESSURE... (check out cleaning with GUNK
or BERRYMAN CHEMTOOL before replacing (I use)):
Amazon com Berryman 0120 12 Chemtool Carburetor Choke and Throttle Body...
Failing all that it is time to find one of those GIANT
SUN engine analyzers... (car club... perhaps)
Hope this helps
Carnac the Magnificent
SOURCE: Car makes grinding noise when I try to start,
You may need to install what they call shims in between the starter and the flywheel in order to align it correctly with the flywheel
SOURCE: '96 Chevy Tahoe won't start
it sound like its in the coleum . may be your key switch is bad . its something simpull. check your fues inside and out .and see if you can hear your realay working. i hope you can find the prob
SOURCE: 1999 Escalade won't start after sitting in rain
What engine? 5.7? If yes, replace the distributor cap.
SOURCE: Will not start without spraying starter fluid for a second.
I would start by changing the fuel filter. The next area would be the O-rings if so equipped. If it starts better after a short use then you are getting air in the fuel lines overnight. Diesels are tempermental. The cranking speed of the starter is important and easily checked externally. If you have a mechanical fuel pump you are relying on cranking speed to prime the fuel system. The timer or timing wiring could prevent the glowplugs from heating up. Diesels rely on glowplugs to start, then compression to run. Its a lot to look at but I suggested the cheapest fixes first.
SOURCE: Hard Starting
first thing i would check is if your glow plugs are actually any good. next i would check your injectors, then the injector pump make sure it's got the needed pressure. change the fuel filter and reprime the system. if the problem still occurs then look for leaks on the fuel system considering it will start with ether tells me it's somehow losing it's prime.
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