Will not start

2005 MAZDA TRIBUTE
209,124 MILES • 3.0L • V6 • 4WD • AUTOMATIC
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MATTSPA123
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I replaced camshaft sensor and crankshaft sensor. I have spark. I think I have fuel because I can smell fuel and I sprayed starting fluid in it also and still wont start.
Nov 16, 2020 at 11:05 AM
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BMDOUBLE
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Put a battery charger or boost pack on your battery, while holding the pedal to the floor crank the engine for 5 seconds, wait 30 seconds, then repeat. This will clear out any excess fuel that you may have in the cylinder that could be causing a "flooded" no start condition. Also get a fuel sample in a clear container. This is the most non-invasive and easiest thing to try first before getting too deep.
Nov 16, 2020 at 11:21 AM
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MATTSPA123
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Where would I get a fuel sample from? could the fuel pump be bad or the filter stopped up?
Nov 16, 2020 at 11:25 AM
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BMDOUBLE
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You can get it from either the filter, or at the fuel injector rail from the line coming into it. If you lift up the driver side rear seat, there will be an access panel for the pump itself, you can access it there but be careful of getting fuel on your seats or carpet. Here the instructions for the pump removal and installation in case this is your problem:
Nov 16, 2020 at 11:40 AM
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MATTSPA123
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Can I check and see if the fuel pump is working at the fuel rail?
Nov 16, 2020 at 11:47 AM
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BMDOUBLE
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You can do it easier at the location under the left rear seat, but yes with a gauge so you can verify pressure. 35-55 psi is the specification. https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Nov 16, 2020 at 1:41 PM
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ASEMASTER6371
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Good evening,

Since you have spark and fuel from the smell, I would start with a compression test to see if the timing is correct. You could have a valve timing issue.

https://www.2carpros.com/articles/car-cranks-but-wont-start

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

You should have around 140-150 pounds of pressure. You could check the front bank which is the easiest.

Roy
Nov 16, 2020 at 5:49 PM
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MATTSPA123
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Okay, can I rent a compression tool from a part store?
Nov 16, 2020 at 6:08 PM
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ASEMASTER6371
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Yes, you can. You could buy a cheap one at Harbor Freight as well.

Roy
Nov 16, 2020 at 6:27 PM
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MATTSPA123
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If it jump time that will cause it not to start also right? I look at the timing chain it seem to turn when it was cranking but could have something broke in there that i can't see.
Nov 16, 2020 at 6:29 PM
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ASEMASTER6371
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That is correct.

I attached the diagram of the timing chain alignments. You have 2 chains that have guides and tensioners.

https://www.2carpros.com/articles/how-a-timing-belt-works

I attached a youtube video of the process for you. There are 2 parts.

https://www.youtube.com/watch?v=CrQVPfniviQ

https://www.youtube.com/watch?v=84-bPOw0h7o

Roy

Nov 16, 2020 at 6:42 PM
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MATTSPA123
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How many camshaft position sensor does this have one or two? I replace one already.
Nov 16, 2020 at 6:49 PM
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ASEMASTER6371
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Okay, I attached the location and procedure for the cam sensor for you.

Roy

CAMSHAFT POSITION (CMP) SENSOR

Removal and Installation
1. Disconnect the electrical connector.
2. Remove the CMP bolt.
3. Remove the CMP sensor.
4. Remove the O-ring.
5. To install, reverse the removal procedure.
Nov 17, 2020 at 1:33 AM
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BMDOUBLE
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My suggestion was the less invasive, easiest thing to try and is always the first thing to check due to the fact that sometimes a vehicle will come in on a tow truck and I go right out and start it up because of something simple.
Nov 17, 2020 at 7:48 AM
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MATTSPA123
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Okay.
Nov 17, 2020 at 8:03 AM
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MATTSPA123
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Can I buy this at Harbor Freight to test the fuel pump?
Nov 17, 2020 at 8:06 AM
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ASEMASTER6371
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Yes, you can. They have a nice set that is inexpensive.

Roy
Nov 17, 2020 at 9:55 AM
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MATTSPA123
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Thanks.
Nov 17, 2020 at 9:56 AM
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ASEMASTER6371
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Anytime.

Let me know if you have any other questions.

Roy
Nov 17, 2020 at 9:58 AM