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97 mercedes e320 will not start unless i spray carb cleaner in throttle body then car will run has no codes fuel pressure is 55 psi has injector pulse

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

terseo
  • 92 Answers

SOURCE: 1994 Yukon running rich and flooding

Fuel pump circuit (low voltage)
Try replacing the fuel pump relay or testing it if you have the manual.

Posted on Sep 20, 2009

airjer995
  • 5332 Answers

SOURCE: 97 jimmy runs when you

If the 8th letter of the VIN # is W which i bet it is than your fuel pressure is to low.

This engine uses a CPI unit to deliver fuel to the cylinders. The CPI unit consists of a central injector that feeds fuel to the poppet valve that are right above the intake valves. The poppet valves require high fuel pressure in order to open and deliver fuel to the cylinders at start up.

The reason why it starts and runs if you add a little gas through the throttle body is that once the vehicle is running the intake is under vacuum. The poppets can open with less fuel pressure in a vacuum. This is a real common scenario with these style injection systems.

A new good quality fuel pump (a/c delco or delphi are good pumps) and your fuel pressure should be back into spec of 58 psi or more and the vehicle should fire right up. Make sure you replace the fuel filter when you replace the pump.

Posted on Oct 17, 2010

  • 140 Answers

SOURCE: got fuel got spark turns

fuel pressure regulator bad,full bypass when vacum applied.

Posted on Feb 19, 2011

  • 461 Answers

SOURCE: car will start but will

THROTTLE POSTION SENSOR

Posted on Mar 07, 2011

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1 Answer

93 bronco, yes carb cleaner in throttle body it runs, will not start other wise


no fuel to or from the injectors
check fuel pressure ( 45-65 psi)
check injector pulse

May 01, 2017 | Cars & Trucks

1 Answer

I have a 98 blazer.The fuel pump is good and filter is new.Im getting gas to the fuel lines-but something is stopping my fuel injector from cutting on!! When I pour gas in the throttle body it starts up...


check to see if your getting a pulse on the injectors
if it has the spider injector with a fuel pressure gauge check pressure see if it drops or have 55 to 66 psi check to see if also check the eng 1 fuse cgeck ecm 1 15amp

May 14, 2010 | 1998 Chevrolet Blazer

3 Answers

My 95 blazer 4.3 will not start, it cranks, has


Try replacing the fuel filter, but it sounds like you have a weak fuel pump. Your cold start pressure should be 62-65 psi and drop about 5 psi when the engine is running. Anything less then 62 psi is going to cause you to have starting issues, you can also test your fuel pump by blocking off the return line to see if you get 75-78 PSI. this is just a test to see if your fuel pump is still good. If you have less then that with the return line blocked off, replace your fuel pump but check your ground wire first. The ground wire is separate from the wire harness and grounded to the frame and a bad ground will give you a weak pump.
Thank you for using Fixya and good luck

Mar 20, 2010 | 1994 Chevrolet S-10 Blazer

2 Answers

1997 Chevy Silverado 1500 4x4 will not start. Getting spark checked all fuses, changed rotar - spark plug wires,


Have you checked the fuel pressure? Fuel pumps are a common failure item on those trucks. Pick up a cheap fuel pressure gauge and hook it up to the shrader valve on the fuel rail. With the ignition on and you should have 55-65psi. Even if it's a few psi below spec it could stop the engine from firing.Once you determine the fuel pressure isn't adequate make sure you have a good power and ground at the fuel pump. If that checks out, time for a new fuel pump module. I recommend only replacing it with an AC delco unit, I've heard bad stories about aftermarket replacements.
You could also spray some carb cleaner or starting fluid in the throttle body and crank the engine over. If it runs for a few seconds after spraying starting fluid in you know you have a fuel delivery problem.

Mar 14, 2010 | 1999 Chevrolet Silverado 1500

3 Answers

1998 suzuki esteem 1.6 will not start HELP!


Having good fuel pressure is a plus (yours seems a bit high but I don't have specs) What you need to find out is if the injectors are opening and putting the fuel into the engine so it can work. Are the plugs wet with fuel or dry? Does it fire up if you spray carb cleaner into the throttle body while cranking?

Aug 30, 2009 | 1998 Suzuki Esteem

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