Won't start

Tiny
MARIANNE POE
  • MEMBER
  • 1997 ISUZU RODEO
  • 6 CYL
  • 138,000 MILES
Replaced serpentine belt, charged battery, cranks but won't start.
Do you
have the same problem?
Yes
No
Wednesday, August 24th, 2016 AT 2:22 PM

16 Replies

Tiny
WRENCHTECH
  • EXPERT
Why was the belt changed? Did the old one fly off or shred?
Was this
answer
helpful?
Yes
No
Wednesday, August 24th, 2016 AT 3:15 PM
Tiny
MARIANNE POE
  • MEMBER
Old belt was shredded and came off. Had been driving and then parked. Went to start up again. Would not start and then noticed belt was off.
Was this
answer
helpful?
Yes
No
Thursday, August 25th, 2016 AT 3:32 AM
Tiny
WRENCHTECH
  • EXPERT
Look at it very closely for any wiring that got damaged when the belt shredded, especially to the Crank sensor
Was this
answer
helpful?
Yes
No
Thursday, August 25th, 2016 AT 3:36 AM
Tiny
MARIANNE POE
  • MEMBER
Wiring is good, bypassed fuel pump relay switch, got gas but won't start
Was this
answer
helpful?
Yes
No
Thursday, August 25th, 2016 AT 10:07 AM
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.
Was this
answer
helpful?
Yes
No
Thursday, August 25th, 2016 AT 10:55 AM
Tiny
MARIANNE POE
  • MEMBER
Changed fuel pump relay and idle air control valve, no spark.
Was this
answer
helpful?
Yes
No
Friday, August 26th, 2016 AT 1:39 PM
Tiny
WRENCHTECH
  • EXPERT
Post back with the results of ALL of those tests.
Was this
answer
helpful?
Yes
No
Friday, August 26th, 2016 AT 1:41 PM
Tiny
MARIANNE POE
  • MEMBER
Don't have right tools to test.
Was this
answer
helpful?
Yes
No
Friday, August 26th, 2016 AT 1:43 PM
Tiny
MARIANNE POE
  • MEMBER
Spark plugs maybe?
Was this
answer
helpful?
Yes
No
Friday, August 26th, 2016 AT 1:43 PM
Tiny
WRENCHTECH
  • EXPERT
We don't diagnose by guessing. We analyze test results. If you are not equipped to do the necessary testing, then I suggest you will have to get it professionally diagnosed.
Was this
answer
helpful?
Yes
No
Friday, August 26th, 2016 AT 1:45 PM
Tiny
MARIANNE POE
  • MEMBER
Ok thanks.
Was this
answer
helpful?
Yes
No
Friday, August 26th, 2016 AT 1:47 PM
Tiny
MARIANNE POE
  • MEMBER
Turned out to be timing belt. Mechanic said probably bent valve. Will cost too much to fix. Frame is badly rusted and ready to go. Thanks for your input.
Was this
answer
helpful?
Yes
No
Saturday, August 27th, 2016 AT 1:16 PM
Tiny
WRENCHTECH
  • EXPERT
That makes sense. Strange coincidence with the drive belt at the same time.
Was this
answer
helpful?
Yes
No
Saturday, August 27th, 2016 AT 1:21 PM
Tiny
MARIANNE POE
  • MEMBER
Yes, the drive belt must have been a coincidence. Need to start looking for another vehicle!
Was this
answer
helpful?
Yes
No
Saturday, August 27th, 2016 AT 1:32 PM
Tiny
RENEE
  • ADMIN
Let us know how it goes so it will help others.
Was this
answer
helpful?
Yes
No
Tuesday, August 30th, 2016 AT 10:43 AM
Tiny
MARIANNE POE
  • MEMBER
Well, looked up my engine and found out it is a non interferenceengine. I am going to have belt replaced in 6 days from now. Will let you know what happens.
Was this
answer
helpful?
Yes
No
Tuesday, August 30th, 2016 AT 10:49 AM

Please login or register to post a reply.

Recommended Guides