answersLogoWhite

0


Best Answer
Copy

You can't tell which is bad until you actually change the filter then test the fuel pressure.

Generally, fuel filters become plugged by fuel sediment contamination and over time, gradually restrict free flow of the fuel. Symptoms of restricted fuel flow are reduced engine performance and poor drivability, such as hesitation upon acceleration. As the fuel restriction becomes worse the engine may even "buck" or surge severely under normal acceleration. Without going into advanced procedures and special equipment required for fuel pressure testing, for the average "shade tree" mechanic the symptoms descirbed lead to the "fairly" easy/routine service of changing the fuel filter. Once the fuel filter is removed, a simple side by side comparison test can be made by blowing gently through the filters, typically the restriction becomes readily apparent when compared to the new filter, as there is virtually no opposition to air flow when blowing through the filters. If you have the skills to safely disable the ignition and rig a clear hose to the open end of the fuel line and an acceptable (safe) container you can then check to see if fuel is free flowing, however caution definitely is the rule if attempting this test, due to fire hazard of fuel in the presence of ignition sources. (i.e., Do not attempt unless you are trained and familiar with safe practices). Once, the fuel filter is replaced road test the vehicle and if the problem is no longer present this will be confirmation that the problem was the fuel filter and not the fuel pump.

gemblue :)

User Avatar

Wiki User

โˆ™ 2015-07-16 18:59:48
This answer is:
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
๐Ÿ˜‚
0
User Avatar

Add your answer:

Earn +5 pts
Q: How can you tell if the fuel pump is bad on a 1992 Astro van or if the fuel filter is just plugged?
Write your answer...
Submit

Related Questions

What cause to lose power in a 1992 cadallic when going 65-70 car does not shut off when just have no power?

Plugged catalytic converter Plugged fuel filter Plugged air filter


How do you remove a fuel filter from a 1990 astro van?

how do you remove a fuel filter from a 1990 astro van do you have to drain fuel tank


What is causing your Toyota pickup to lose power?

Plugged fuel filter? Plugged air filter? Plugged catalytic converter?


Why would your 1995 buick lesabre run sluggish after putting it in gear?

Plugged air filter? Plugged fuel filter? Plugged catalytic converter? Weak fuel pump?


What causes lack of power in a 2001 Honda Civic?

Plugged air filter? Plugged fuel filter? Plugged catalytic converter?


Why cant you get gas to your 350 Chevy?

Plugged fuel filter, bad fuel pump, crimped, or plugged fuel line.


Why does your 1977 Chev 454 4-bbl idle well but have no power?

weak fuel pump? Plugged fuel filter? Plugged air filter? Plugged catalytic converter?


Why does your 1990 Chevy Camaro rs redline then bog when you drive it?

Plugged fuel filter? Plugged air filter? Plugged catalytic converter?


When going into passing gear you loose all power?

Could be a plugged fuel filter, or a plugged air filter, or a plugged catalytic converter.


If fuel filter plugged would fuel injector cleaner work?

No. The filter will need to be replaced.


I can not get my 2000 galant to stay running what could it be?

Bad fuel? Plugged fuel filter? Plugged air filter? Bad fuel pump? Weak Ignition coil? Check for fuel and spark


Why would a 1993 ford explorer die when its gassed?

Plugged air filter? Plugged fuel filter? Timing chain sloppy? Weak fuel pump?


Can a bad fuel filter stop pressure from the fuel pump?

A plugged fuel filter can reduce or completely block the flow of fuel.


Why does your car lose power when it goes into the passing gear?

Plugged fuel filter, plugged air filter, restricted exhaust, plugged catalytic converter.


1995 blazer no gas but fuel pump is working?

Is the fuel filter plugged? Crack a connection on the fuel rail to see if you have fuel there. Injectors plugged?


When stepping on gas car is sluggish?

Needs tune-up? fuel filter? Air filter? Plugged catalytic converter? Needs tune-up? fuel filter? Air filter? Plugged catalytic converter?


What can be done for a plugged fuel filter 2001 5.2?

Replace the fuel pump module assembly.


My 2000 Malibu LS won't go over 10 or 15 mph what's wrong?

Weak fuel pump? Plugged fuel filter? Plugged air filter? Plugged catalytic converter?


What cause the1992 Mazda proceed truck engine to stop after running for a minutes?

Weak fuel pump? Bad fuel pump? Plugged fuel filter? Plugged air filter? Bad ignition coil? plugged catalytic converter?


Where is the fuel filter on a 1992 325i display?

where is the fuel filter located on a 1992 BMW 325i.


Why does it not get gas?

Plugged filter, or faulty fuel pump.


Does a dirty fuel filter mess up fuel injectors?

A dirty/plugged fuel filter is like tying a knot in your fuel line.


Why does engine on 1993 s10 not open up when fuel accrelated?

Could be a plugged fuel filter or a plugged catalytic converter.


What would make a car not have power?

A plugged air filter, a plugged fuel filter, incorrect fuel pressure, a plugged catalytic converter/restricted exhaust or it may be just in need of a good tune up.


Why do you lose power when engine hits 3000 rpm in a 2001 s10?

Could be a restricted exhaust (plugged cat), restricted intake (plugged air filter), restricted fuel system (plugged fuel filter).