1985 Ford Bronco Starting problems

Tiny
DUDE059
  • MEMBER
  • 1985 FORD BRONCO
  • 250,000 MILES
I have changed the starter the coil and the starter solenoid and change to a new batterie and it is trying to turn over but I still can't get it to start all of the pulleys are free and the fluids are good I have checked the terminals to the cables and the are making a a spark oh and I have changed all of the plugs and wires
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Wednesday, October 23rd, 2013 AT 3:13 PM

4 Replies

Tiny
WRENCHTECH
  • EXPERT
Your question isn't real clear.
Is this a problem with the starter cranking speed not being fast enough or is it cranking normally and just not starting?
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Wednesday, October 23rd, 2013 AT 3:41 PM
Tiny
DUDE059
  • MEMBER
It's cracking normally just not starting
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Wednesday, October 23rd, 2013 AT 3:45 PM
Tiny
WRENCHTECH
  • EXPERT
All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.

Every engine requires spark, fuel and compression to run. That's what we have to look for.

These are the basics that need to be tested and will give us the info required to isolate a cause.

1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.

2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.

3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.

4) If all of these things check good, then you would need to do a complete compression test.

Once you have determined which of these functions has dropped out,
you will know which system is having the problem.
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Wednesday, October 23rd, 2013 AT 3:49 PM
Tiny
DUDE059
  • MEMBER
Ill give that a shot thanks
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Wednesday, October 23rd, 2013 AT 3:51 PM

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