No start, has fuel, spark and compression

Tiny
ARMYJIM
  • MEMBER
  • 2004 DODGE NEON
  • 2.0L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 160,000 MILES
Replaced water pump, along with timing belt. I have checked timing three times. Engine is in time. Replaced fuel pump to fix no fuel problem. Replaced plugs and coil for no/low spark. Compression is 95-105 psi in dry test. Have checked all fuses and relays for operation. Engine will not start. Removed fuel injector connections. Engine tries to start once disconnected.
I am at a loss!
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Wednesday, August 10th, 2016 AT 4:52 PM

10 Replies

Tiny
SATURNTECH9
  • EXPERT
95 psi does not sound good to me. So did the timing belt break or were you just replacing it for maintenance?
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Wednesday, August 10th, 2016 AT 5:46 PM
Tiny
ARMYJIM
  • MEMBER
Water pump went out, so we decided to replace it. 95 is low for compression, I believe. But, originally we thought it jumped time, and thought that might be the reason it was low. However, it did not jump time, not sure why compression is so low.
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Wednesday, August 10th, 2016 AT 8:42 PM
Tiny
SATURNTECH9
  • EXPERT
Usually the reason engines get low compression is due to valve issues.
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Wednesday, August 10th, 2016 AT 8:44 PM
Tiny
ARMYJIM
  • MEMBER
I thought the same thing, but if I bent a valve, I would lose compression in that cylinder. I have got pretty close to the same compression in all cylinders. I did both wet and dry tests, wet tests were in the ranges of 120-145. Still not quite high enough, but should be able to start.
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Thursday, August 11th, 2016 AT 6:44 AM
Tiny
ARMYJIM
  • MEMBER
I also thought about rings, but can you blow out rings all at once?
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Thursday, August 11th, 2016 AT 6:46 AM
Tiny
SATURNTECH9
  • EXPERT
No, all rings wont fail at once unless there was lack of oil of contamination in the oil. If it ran fine before I would really suspect engine timing I know to checked it three times. But what else did you mess with that would cause the no start?
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Thursday, August 11th, 2016 AT 12:25 PM
Tiny
ARMYJIM
  • MEMBER
Nothing I can think of. I even went so far as to check and see if the key-way on the crank pulley was in place properly. I even ensured I have fuel pressure. 40 psi, I believe. Could the computer be doing something I do not know about?
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Thursday, August 11th, 2016 AT 1:09 PM
Tiny
SATURNTECH9
  • EXPERT
The computer shouldn't be doing anything it wasn't doing before the repair. So are the timing covers still off?
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Thursday, August 11th, 2016 AT 5:15 PM
Tiny
ARMYJIM
  • MEMBER
Yes they are.
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Thursday, August 11th, 2016 AT 5:27 PM
Tiny
SATURNTECH9
  • EXPERT
Could you take some good pictures of the timing marks and post them so I can see them?If I was there with the car I would want to do the same thing.
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Thursday, August 11th, 2016 AT 5:42 PM

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