Buy Now | Log In | ALLDATA Corporate Site |
Back To Home Page
Log In To Your Subscription
Go To ALLDATA Back Home
Buy A Subscription! Back Home About ALLDATA Information View Sample Vehicles Read Testimonials View Factory Service Bulletins and Recall Titles Contact Us
Dowload Our Navigation Chart
February 2015: New vehicles added including 2014 GM.
• View New Vehicles
October 2014: Release of 2013 along with initial 2014 Vehicles
• View Vehicles
View All News and Updates:
• Go To News
Tech Tips
  Read All Tech Tips

ALLDATA Tech Articles Are Updated Weekly
• View All Tech Articles

  Dodge Durango: Brake Pulsation Problems In Paul's Durango
• Read Dodge Article
Fixing A Smelly Audi Audi Tech Tip: A4 begins to Smell caused by a Faulty Hose Composition
• Read Audi Article
Why Do You Need To Change Your Timing Belt? Why Replace Your Timing Belt
• Read Belt Article
Jim Grant Tech Tips Jim Grant Tech Tips
A collection of helpful articles based on reader submissions
Home >> Featured Tech Articles >> Go Back
  Jim Grant's Tech TipsJim Grant's Tech Tips
Below is a collection of Jim Grant's Tech Tips sorted by Vehicle Make. These Tech Tips were answers to questions submitted to Jim by users over the course of many years.
If you have any questions, please feel free to email us.



Lincoln - Mercury
  Jim Grant's Tech Tips

94 Chevy P/U, Fuel Filter Problems & Fires
Q: It seems there was a recall on fuel filter problems on '94 Chevy P/Us. I had already replaced my fuel filter 2 times. Well, now I'm having problems again even after Chevrolet supposedly "fixed" the filter recall. My truck will run fine, then it will quit while I'm driving, causing me to shift into neutral while coasting to restart it. I know it's not the fuel pump because I checked that and I also checked the ignition and that was o.k. So I figured there was a clogged fuel line from the filter to the carb. I sprayed it with carb cleaner and tried to start it but it stalled out as soon as it started. It then caught on fire right inside the carburetor. Now I'm apprehensive about continuing with my home repair but I can't afford to bring it to a shop. Please help before I have to dip into my savings account. Any tips would be appreciated! Thanks

A: Diagnosis by fire? It's a sure fire way to cure a driveability problem! How do you know it isn't the fuel pump? Was fuel pressure checked with a pressure gauge? Did you know that your truck doesn't have a carburetor? It's fuel injected. It takes more than the presence of fuel for the fuel injection system to operate properly. Your truck, if equipped with a low pressure injection system, requires a fuel pressure of 9 to 13 psi. A fuel pump providing anything less will cause the engine to exhibit many of the driveability complaints that you mention. GM did issue a bullet pertaining to a hard starting or no start condition. ALLDATA Information Systems shows bulletin No. 66-63-09 that addresses owner's complaint that the engine is hard to start or will not start. Cause; Low or no fuel pressure due to a ruptured fuel pump pulsator. The pulsator is a flexible connector between the fuel pump and the metal fuel line in the gas tank. Fuel pump pulsator's can fail with age but are also sensitive to ethanol and additives such as dry gas. The replacement pulsator is made with Viton which is more resistant to gas additives. A closer inspection of your fuel supply system may provide the answer to your problem.

Have any Questions About Please Email Us
Buy Now | Log In | About | Sample Vehicles | Testimonials | Join Affiliate Program