Innovate mtx

[Opposedodie]

OK , I got my engine back together and started it up ran it a few times in the driveway to get the fluids all topped off. Started it back up to run it up the street and my Mtx is reading 22.5 at idle, pegged out in the red my Q is, is this Rich or Lean? I didn't change anything but gaskets, head up... Same compression .039 head gasket ..

 

[Noobz347]

That's lean, extremely lean providing that the wideband is reading accurately. At idle you should be reading in the 14.7 range.

 

[Opposedodie]

Time to turn the screws to the Fuel Regulator........

 

[Noobz347]

I'd probably check for vaccum leaks before I went cranking up the fule pressure.

 

[Opposedodie]

I do have a vac leak ... but can not find it , I noticed that my SC tube was really tite, so I was going to take it and the upper intake back off to see what the vac tubes look like under the intake, I didn't take off any vac tubes from the fire wall just the 4 from the upper intake when I put the new head gaskets in.
I looked at all the other vac lines and didn't see anything wrong with them .. but I can get a better look when the upper intake is off...

 

[90lxcoupe]

My wideband would read really crazy numbers, found out later that i had pinched the o2 sensor wires. When i replaced them the car ran how it was supposed to

 

[65ShelbyClone]

I doubt a 5.0 would even run by itself at 22:1; most gasoline engines won't. My guess is that there is a problem with something other than the mixture.

 

[90lxcoupe]

I believe the MTX pegs at 22.4 or 22.5, when i had the XD-16 innovative controller the gauge was reading at like 60:1 when the factory oxygen sensors went south.

 

[Opposedodie]

Re-torqued the intake manifold tonight checked all the vac hoses, cut some ends off and replaced one , put it all back together and same sound, got a whistling sound coming from what sounds like behind the upper intake and noticed that the check engine light will come on then go off and then come back on... It will not whistle all the time comes and goes, but when it starts to whistle the RPM will drop about 150 RPM"s and almost stall... Wide band still pegged at 22.4 at idle touch the pedal and it jumps back to 13 to 14 at about 1200 RPM's I pulled the + off the battery while I was taking it apart to clear the memory.. I am stuck ... Can I install the intake man gaskets back words ... LOL ... I know that they are not upside down .... Any help would be Great....

I am going to make a small film of it tomorrow night and post it on UTube if I can not figure it out ...

 

[90lxcoupe]

BBK throttle body? Spray carb cleaner around the intake and if it runs different you will know its a vac leak

 

[Noobz347]

I know this doesn't have anything to do with the AFR reading but wasn't it the BBK TBs that had the whistling issue because of the relief hole in the throttle blade?

 

[Opposedodie]

Here is a Vid of my car running and you can here the whistling ... Any help would be Great...

DSCF6072.AVI - YouTube

 

[Opposedodie]

I am going to take the TB off and the water block , take them to work and look at making a set of gaskets for them ... I didn't have them off when I did the head gaskets but I have read on the site that there mite be a problem there...

 

[90lxcoupe]

What brand throttle body is it?

 

[Opposedodie]

70mm Professional Products throttle body .. This never whistled untill after the head gasket replacement...

 

[Opposedodie]

Found a little puddle of oil on top of the water pump tonight ... So in the morning I am going to take the hole top end off and try and reseal it and also put new injectors in ...

 

[Opposedodie]

I finally found it ... Fuel Injector Seal on the number 4 injector was bad ... Changed out the seals and no more vac leak .... Runs great.... Starts and idles great... thanks for all the options .... Idle AFR in at 14.4, about 3500 RPM's it drops down to about 12.3 ....

 

[Noobz347]

Sweet! Glad you got it al worked out.