how do you test rail pressure on injectors - truck won't start

Asked by May 18, 2015 at 09:06 PM about the Dodge Ram 2500

Question type: Maintenance & Repair

1 Answer

565

Connect appropriate fuel pressure gauge to test site usually located on injector rail under black plastic cap that prevents dust and foreign debris from depressing Schrader valve accidentally spraying raw fuel onto the engine. Check for manufacturer's specs for pressure reading, usually around 55-65 psi. Also check for blown fuel-pump fuse/ PCM / injector/ fuses. ASD relay failure can also cause fuel pump not to run! If everything checks out on many higher mileage vehicles, that have been ran low on fuel, pump has overheated and seized. While someone is cranking engine over install noide light into injector harness connector , it should flash. Injector noides can be purchased at harbor freight.

Your Answer

Dodge Ram 2500 Experts

  • #1
    Dan Connell
    Reputation
    2,390
  • #2
    Ram2500Diesel
    Reputation
    700
  • #3
    AJBurns
    Reputation
    610
View All

Related Models For Sale

Used Dodge Ram 3500
74 Great Deals out of 2,162 listings starting at $5,980
Used Ford F-250 Super Duty
374 Great Deals out of 42,218 listings starting at $1,600
Used Ram 2500
238 Great Deals out of 34,828 listings starting at $6,995
Used Chevrolet Silverado 2500HD
361 Great Deals out of 29,859 listings starting at $2,500
Used Dodge Ram 1500
316 Great Deals out of 9,549 listings starting at $800
Used GMC Sierra 2500HD
142 Great Deals out of 15,260 listings starting at $3,500
Used Ford F-350 Super Duty
431 Great Deals out of 24,311 listings starting at $3,900
Used Ford F-150
2,344 Great Deals out of 215,477 listings starting at $1,300
Used Ram 3500
169 Great Deals out of 18,742 listings starting at $12,995
Used Chevrolet Silverado 1500
1,781 Great Deals out of 149,286 listings starting at $1,495
Used Ram 1500
901 Great Deals out of 119,059 listings starting at $5,995
Used Ford F-250
401 listings starting at $2,300
Used Toyota Tundra
478 Great Deals out of 38,526 listings starting at $1,999
Used Chevrolet Silverado 2500
3 Great Deals out of 212 listings starting at $4,495
Used GMC Sierra 1500
722 Great Deals out of 58,462 listings starting at $1,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.