No start but have spark and fuel

pcb

The Diagram Dude
:
2002 MP5
Actually, you said that you have spark and fuel.
If there is a problem with the crank sensor, the ECU kills the spark.
 

pcb

The Diagram Dude
:
2002 MP5
If it was me, I might consider some of that engine start spray, that you spray in the intake.

That's just a guess though, you can wreck an engine with too much of that stuff.
 
If it was me, I might consider some of that engine start spray, that you spray in the intake.

That's just a guess though, you can wreck an engine with too much of that stuff.
I’ve tried it and it still won’t fire on it. It will sputter a few times like it wants to fire but then just goes back to cranking
 

pcb

The Diagram Dude
:
2002 MP5
So it’s most likely fuel pressure or compression then?

That makes sense to me.

Here's a thread about replacing the fuel filter and fuel pump.

 
That makes sense to me.

Here's a thread about replacing the fuel filter and fuel pump.

Awesome, thanks man! I appreciate the knowledge.
 
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pcb

The Diagram Dude
:
2002 MP5
... Still need to check my fuel pressure though because I don’t hear my pump kick on but I still got gas where it should be.


I just went out to my car, put the key in the ignition, and turned it to run.

I didn't hear the fuel pump at all.
I don't know if I just couldn't hear it or if the ECU hadn't turned it on?

I'm pretty sure that the system can store pressure for a while (I think that's what the pulsation damper does?) and the fuel pump only kicks in when the pressure starts to drop.

So if you don't hear the fuel pump, that may be normal.



There is a way to turn on the fuel pump with a jumper wire.

You're supposed to use it to turn on the pump to check the pressure.


I'm completely guessing here, but maybe you could connect a jumper wire to bring it to maximum pressure then try to start it?


I don't know how the car monitors pressure to turn the pump on and off or if maybe the pressure would be too high to start the car, but I think I would try it if it were me.

I know that there is a PRC solenoid valve that is supposed to kick in the fuel pump to increase the fuel pressure for a hot start.
Perhaps there is a problem with that solenoid or system that is messing with your fuel pressure, assuming that you do have a fuel pressure issue?


Remember I'm just guessing so you'll have to use your own judgment.

(I can't upload pictures at the moment, but the info about the jumper wire is in the FSM on page 01-14-4.)



I'm thinking that your no-start situation may be because the ECU isn't turning the fuel pump when it's supposed to?

Or perhaps your fuel filter is clogged, along with a worn-out fuel pump, and your car can't get up to proper pressure?
 
I just went out to my car, put the key in the ignition, and turned it to run.

I didn't hear the fuel pump at all.
I don't know if I just couldn't hear it or if the ECU hadn't turned it on?

I'm pretty sure that the system can store pressure for a while (I think that's what the pulsation damper does?) and the fuel pump only kicks in when the pressure starts to drop.

So if you don't hear the fuel pump, that may be normal.



There is a way to turn on the fuel pump with a jumper wire.

You're supposed to use it to turn on the pump to check the pressure.


I'm completely guessing here, but maybe you could connect a jumper wire to bring it to maximum pressure then try to start it?


I don't know how the car monitors pressure to turn the pump on and off or if maybe the pressure would be too high to start the car, but I think I would try it if it were me.

I know that there is a PRC solenoid valve that is supposed to kick in the fuel pump to increase the fuel pressure for a hot start.
Perhaps there is a problem with that solenoid or system that is messing with your fuel pressure, assuming that you do have a fuel pressure issue?


Remember I'm just guessing so you'll have to use your own judgment.

(I can't upload pictures at the moment, but the info about the jumper wire is in the FSM on page 01-14-4.)



I'm thinking that your no-start situation may be because the ECU isn't turning the fuel pump when it's supposed to?

Or perhaps your fuel filter is clogged, along with a worn-out fuel pump, and your car can't get up to proper pressure?
I think it’s fuel pressure still. Not 100%,I was supposed to pick up a parts car Saturday morning but that fell through. Gotta wait until I get another alternator before I start messing with it again unfortunately. An alternator from an MPV would work,right?..
 

pcb

The Diagram Dude
:
2002 MP5
I don't know about an alternator from an MPV.
Our alternator is controlled by the ECU and it may be specific to our car.

I remember some people installed an alternator from a different vehicle that had a built-in regulator.
They had to do something to get the battery light to turn off on their dash.

You could probably compare part numbers between the two vehicles to find out if it's the same alternator.
 

pcb

The Diagram Dude
:
2002 MP5
I checked out the descriptions of the alternators at Rockauto and the alternators appear to be different.
They are both externally controlled but there are a lot of differences.

They may even have different dimensions with different bolt holes?






 
I checked out the descriptions of the alternators at Rockauto and the alternators appear to be different.
They are both externally controlled but there are a lot of differences.

They may even have different dimensions with different bolt holes?






Damn of course it won’t work,I found an alternator off an MPV in the garage lol looks like I better head to the pick and pull
 
:
2020 CX-5 AWD
Not yet,I was gonna do one after we found out it had spark and fuel but wouldn’t start. But I had to pull the alternator off and use it on the daily
Ok, sounds like you'll be getting to that at some point.

Also, was this vehicle running well, right after you got it and before you did the timing belt? I'm guessing that it wasn't, because you discovered the bad HG shortly after the timing belt job, which should have caused it to be running poorly right from the get go.
 
Ok, sounds like you'll be getting to that at some point.

Also, was this vehicle running well, right after you got it and before you did the timing belt? I'm guessing that it wasn't, because you discovered the bad HG shortly after the timing belt job, which should have caused it to be running poorly right from the get go.
That’s the worst part,I bought it not running from a kid that had no idea what was wrong with it. He said he was doing about 80 on the highway and it just died on him. When we tore it apart the first time it just looked like the timing belt stretched out and skipped a few teeth. The gasket really wasn’t too hateful but there was a crack in it so we replaced it anyway along with new head bolts. I’m leaning toward it being a compression issue since it’s got fuel and spark and still won’t fire with starting fluid,which sucks because I’ve dumped a ton of money into the car already and haven’t even got to hear it run. I was hoping it was just like a blown fuse for the security system but of course I couldn’t be that lucky lol
 

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