Q: The car won't start without starter fluid, V2500 Suburban Chevrolet

asked by on

I have a 1989 chevy suburban with a tbi 350. Truck will not start unles i spray starter fluid. After it starts it runs great. Replaced distributer cap, ignition control modual, new plugs and wires, new engine colant temp sensor, new fuel filter new fuel pressure regulator i rebuilt the tbi. When running. The injectors spray in a steady fan. Checked for codes and got a code for a bad knock sensor wich i will be replacing on friday. I had my wife try to start the truck while i watched the injectors. They both pulse. I can hear the pump turn on with key in accessory position. I replaced the fuel pump relay just to be safe. I checked timing with the advance wire unplugged. Timing is at 0. Im getting tired of throwing parts at this truck.what am i missing?

My car has 120000 miles.
My car has an automatic transmission.

Hello and thank you for your question.
Perform a fuel pressure test. Even though the fuel is pulsing out of the injectors with the engine cranking the fuel pressure could be too low. The system must have a minimum of 12 pounds of fuel pressure to start and run. If there is proper fuel pressure and you have spark to the spark plugs, then check to see if there is any vacuum leaks. If there is 15 hg or more with the engine running, then that is okay, but 19 hg to 21 hg is preferred. When checking vacuum with cranking the engine, hold open the throttle plate with a large screwdriver and check for vacuum. If the vacuum is less than 2 hg, then there is a problem with the vacuum system. If the vacuum is normal and all the readings are checking out to be good, then when you can get the engine running, put an engine cleaner or sea foam into the vacuum system and run the engine at 3,000 rpm. Slowly allow the cleaner to drip into the vacuum system. This will clean out the cylinders and valve train that will cause carbon build up. Carbon build up will prevent the cylinder from getting to the proper temperature by sticking the valve open or keeping the rings from sealing properly. Either or starting fluid will ignite at a higher flash rate than gasoline. If you need assistance in diagnosing your no start situation, then seek out a professional, preferably a professional from Your Mechanic to help you with your starter issue.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. The car won't start without starter fluid, V2500 Suburban Chevrolet

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Battery light

Hello, thank you for writing in. The charging system is controlled by the PCM (powertrain control module). The module receives input information to keep the electrical system operating, if the voltage goes below 9.0 volts the light will come on...

Q: Vacuum line off the plug on the back of the throttle body 89 Dodge Ram 100

Your vehicle should have a vacuum diagram sticker under the hood somewhere. This should be the same sticker that says the engine size. This will normally tell you where all of the vacuum lines are located and what is connected...

Q: Top hose came off, replaced it, replaced coolant, now bubbling coolant and overheating vehicle

Claimed by Jeff Engstrom

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...