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AMEDEE
AMEDEE, FORD TECHNICIAN
Category: Ford
Satisfied Customers: 25417
Experience:  ASE CERTIFIED TECHNICIAN ADVANCED LEVEL SPECIALIST. Wisconsin certified emissions state inspector
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1986 ford ranger: with 2.9 v6..Wont start at all.

Customer Question

1986 ford ranger with 2.9 v6. Won't start at all. Would run but cut out when it got hot. Put new heads in. Started right up but then did the same thing. Now it seems to be a lack of fuel. Has fuel pressure but I'm not certatin the injectors are working right. Is there a sensor for them to turn them on and off that might have gone bad?
Submitted: 9 years ago.
Category: Ford
Expert:  AMEDEE replied 9 years ago.

Greetings!

We will have to pinpoint what the engine is missing.


Spark


Fuel


Compression

 

All three of these are tested when the engine is being cranked over. There are two way of checking for fuel. Fuel pressure and fuel trigger. Both are very important and must be present for the car to start. Fuel pressure is self explanatory. U just hook up the gage and see what the reading is. Fuel trigger is check with a noid light. The injector gets unplugged and the noid light gets plugged in to the injector clip. With the engine cranking over, this light must blink. This is the signal to the injectors from the computer. U can have all the fuel pressure in the world, but it wont matter if the injector is not pulsing gas into the cylinder like it should! Compression tester, spark tester, fuel pressure gage and noid light are all accessible at your local auto store. All three tests play a very important part in diagnosing a no start condition. Be extremely careful when doing these tests.