Question about Mercedes-Benz E320
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: I have a 1991 Dodge Stealth ES that will not start or run unless I spray brake cleaner into the throttle body. It has no injector pulse, good fuel pressure, and has spark. Have had the computer rebu
Fuel pump relay or fuel pump.
Posted on May 22, 2009
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
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