Mazda MPV twisted hoses- Help!

I’ve got a 2005 Mazda MPV with the 3.0L. 

The engineers, in all their wisdom, designed the car so that the entire intake manifold has to be removed to change the spark plugs. 

This also necessitates removing air intake, several vacuum hoses, breather hoses, egr hoses, coolant hoses, and vacuum hoses to get the intake out. 

The driver’s side of the car is a rat’s nest  of small hoses.

 I mixed them up. 

On completion of the job, I started the car and it idled roughly, blowing white smoke out the tailpipe. 

In addition to the various vacuum lines etc, this car has preheater hoses which go to the throttle body. I have a feeling I switched one of the preheater coolant hoses with a vacuum line or egr line (which are very similar in size)

Anyone have any decent diagrams to sort out the mess of hoses on this car?

I have already disassembled it and very carefully reassembled. I’m obviously missing something. 

Thanks!

Would this help? It says it's free...

https://cardiagn.com/2005-mazda-mpv-service-manual/

Well, the easiest way to figure out what's a coolant line is to see what the other end is hooked to. All the vacuum stuff goes sideways or up. The coolant lines are going to go down and hook to a coolant manifold thingy that hooks to the end of each cylinder head. It is a complicated mess of plumbing but i dont think it will be too hard to figure out what's coolant and what's not just by tracing each hose to its other end. 

The good thing is that it probably could have been worse (dump it all down one intake runner and hydrolock it) and it doesn't seem to be that bad. That's a win.

In reply to Vigo :

Most of the lines come through the firewall. 

Stealthtercel said:

Would this help? It says it's free...

https://cardiagn.com/2005-mazda-mpv-service-manual/

Thanks, but I couldn't get those links to work.  

I had no troubles with the link, try a diffrent browser or OS. I found this for you from the file.

In reply to pjbgravely :

Thank you

This thing is kicking my butt. 

The diagrams weren’t helpful (not similar to existing), so I did it Vigo’s way. Put on my big boy pants, lots of patience, and carefully traced everything. 

I was very slow and methodical.  Carefully checked everything.  

I found the problem. There was a hose I had missed.   I am very confident I got it back together right (although, obviously not 100%, or I wouldn’t be here)

So, I fired it up, and it ran well. Still had some white smoke (which didn’t surprise me). I took it for a drive- it ran well. No misses, etc.  Still a few coughs, but I figured it was the water burning off. No CEL.  The white smoke burned off quickly, and I parked the car. Only drove it a mile or so (did not fully heat it up). 

Pulled the dipstick to check, and yeah, there was a bit of clouding. Time for an oil change. 

Went to the store to get some oil and a filter (in a different car). When I got back, I thought I’d double check to see if there was any more white smoke before changing the oil. 

Wont start. 

Cranks fine, but won’t fire. It was 10 at night and I had had enough. This morning I tried again, but no luck at all. 

Its got new injectors and plugs. It’s acting like no spark. 

The best I can figure is that in spite of my careful assembly, there has got to be a loose wire that I missed.

I’m trying to avoid pulling the intake manifold again. This evening I am going to pull the intake assembly again and check the connections again. I will also pull the 3 plugs that are easy to get to and see if they have water.  After that, I’m stumped. 

Any other thoughts?

Ug. 

If water was leaking internally from the intake manifold to the cylinders you should see that when you take the front three plugs out. But im not sure that would cause a crank no start (unless leaking water damaged the plugs).

I'd guess a loose cam or crank position sensor or wires. 

In reply to Robbie :

Thanks.

I agree, my brain is just a bit foggy on this one because it keeps whooping me. 

Pulled the 3 accessible coils/ plugs. No sign of water in the cylinders. 

Pulled the intake air system and checked every hose/ wire/ connection. Everything seems right. 

Replaced both the cam and crank sensors. 

Still wont fire. 

I’m  feeling like I am down to a wiring harness problem or the PCM. 

Anyone else?

It could be an IAC problem. Push the gas peddle down a little when starting.

In reply to pjbgravely :

Tried that. 

Got a little cough like it was trying to fire, but no luck. 

back to basics. Spark or fuel? I am assuming you didn't suddenly lose massive compression; easy to check for those two first.

Maybe the fuel pump relay died. Maybe a fuse blew. Maybe the vacuum signal to the fuel pressure regulator got knocked off. etc.

In reply to Robbie :

Yeah, those are good. 

I’m starting to think it’s not something I did. I think I had a secondary issue coincidentally at the same time. 

In reply to Robbie :

I meant those were good comments, not necessarily that I had checked them all.