Crank no start

Tiny
JOHNSON3584
  • MEMBER
  • 2003 MAZDA PROTEGE
  • 2.0L
  • 4 CYL
  • 2WD
  • MANUAL
  • 210,000 MILES
I got the car last week they said the timing belt had broke, but the belt is in tack and I put it back in time. It cranks but wont start so double checking the timing checked the fuses and fuel pump all fine. Disconnected the air sensor to see if it was the problem still same thing. What else would cause this problem?
Sunday, December 22nd, 2019 AT 11:07 AM

8 Replies

Tiny
JOHNSON3584
  • MEMBER
  • 5 POSTS
It is a protege 5 if that makes a difference.
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Sunday, December 22nd, 2019 AT 11:10 AM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

When you say that you put it back in time, what exactly do you mean? Also, when you turn the engine over is there resistance or is the engine spinning freely, like "free wheeling"? Please get back to us with the answers and we can take it from there.

Thanks,
Alex
2CarPros
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Sunday, December 22nd, 2019 AT 4:51 PM
Tiny
JOHNSON3584
  • MEMBER
  • 5 POSTS
I put timing belt on and have it where it's supposed to be to be in time. It's getting fire and tries to start then just keeps cranking.
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Sunday, December 22nd, 2019 AT 5:03 PM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello again,

Okay, so it's getting spark, and at the proper time as the timing belt is correct, so let's check to see if you are getting fuel. Here is a link below to a generic guide on how to check fuel pressure:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

In the diagrams down below I have included the instructions on how to test the fuel pressure in your vehicle. Please get back to us with what results you are able to find out, and we can proceed from there.

Thanks,
Alex
2CarPros
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Monday, December 23rd, 2019 AT 12:35 AM
Tiny
JOHNSON3584
  • MEMBER
  • 5 POSTS
As I stated in first post it is getting fuel and I have already checked fuses and the air sensor. I changed out the cam sensor to see if it was bad but same result.
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Monday, December 23rd, 2019 AT 8:51 AM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello again,

Okay, sorry, I forgot about that. So, this is probably going to be an issue with the compression of your vehicle. I would recommend that you do a compression check next. Here is a link to a guide explaining how to do this procedure properly below:

https://www.2carpros.com/articles/how-to-test-engine-compression

An engine really only needs to have three things present, and then it really has no choice but to start, fuel, spark[delivered at the proper time], and compression. We have established that the first two are present, so let's see where we stand after a compression test. Please get back to us with the results and we can go from there, if needed.

Thanks,
Alex
2CarPros
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Monday, December 23rd, 2019 AT 12:44 PM
Tiny
JOHNSON3584
  • MEMBER
  • 5 POSTS
Did compression test first one was 60 the others dropped 30 and below.
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Tuesday, December 24th, 2019 AT 10:37 AM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello again,

Okay, so there is the problem. Compression is low at 60 P.S.I. and the lowest cylinder needs to be at least 75% of the highest. Here is a link explaining some reasons of why an engine would have low compression below.

https://www.2carpros.com/articles/the-reasons-for-low-compression

Since you originally said that you had to put the timing belt back in time I would probably say that your engine might have experienced piston to valve interference damaging the valves and or the pistons. Please go through the guide and get back to us with what you decide to do.

Thanks,
ALex
2CarPros
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Tuesday, December 24th, 2019 AT 4:42 PM

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