Question about Cars & Trucks
Old car, very old, and will have lots of ignored problems and skipped maintenance. (as a rule)
do the service, do the full 60k tune up. (did you?)
it's in the manuals, all of them.
and yes, that includes, all filters,
This is a CARB car, right>? (pre 88s generally are)
what engine, lots of engine options.
on carb cars, there are 3 filters (typ)
1: a filter stock in the tank.
2: an inline filter.
3: one on carb is in the , carb fuel fitting. what carb brand?
it has a trick carb too. not conventional. a VV carb.
i log in to alldata dot com, (so can you, and should)
All vehicles with the 5.8L engine are equipped with a Motorcraft 7200 Variable Venturi (VV) carburetor. Fuel is supplied to the carburetor by a mechanical fuel pump mounted on the engine. The fuel pump is driven by an eccentric attached to the front of the camshaft.
The 7200 VV carburetor is unique in that it is able to vary the venturi area according to engine speed and load, which is quite different from standard carburetors which have a fixed venturi area. The venturi area is varied by dual venturi valves that are controlled by engine vacuum and throttle position. The position of the venturi valves change, depending on engine demands, to determine the area for airflow to the two throats of the carburetor.
the fuel pressure at the pump must be good
the filters clean
if the carb float bowl is dry, the carb will never work..
no starts on all Gas cars. is
(there are simple tests for each)
if spark are soaked, the try super secret unflood mode.
cranking with throttle valve (right foot) wide open
all operators guides say that.
on carb cars, this unloads the choke (if not busted) and you
get mostly air to the engine. un flooding it.
same with newer cars too.
Posted on Oct 12, 2013
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Posted on Jan 02, 2017
SOURCE: 1988 Ford Crown Vic Strange Idle
When you turn the key on does the check engine light come on? If not it may be burned out. It sounds like a MAP sensor or an O2 sensor is bad. I would suggest taking it to autozone as they do free diagnostic and seeing if a code comes up. If it is a sensor it should, if not it may be the idle sensor not reading right in the ECU. More than likely it is one of the sensors though.
Posted on Jun 23, 2009
Check the fuel pump reset switch again, if it is popped back out then replace that little switch in the trunk, any ford one will do. it works off a magnet and a bearing to close the circuit for the fuel pump. easy fix.
Posted on Dec 20, 2009
Look at the fuel injectors themselves as I have found the injectors to leak thru the body of the injectors.They should all be dry when engine is running or off.Also look to where the fuel hoses attach to the fuel rails.
Posted on Apr 18, 2010
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