Now that you have mentioned the brake issue........

You better add the brake booster to the list of possible vacuum leaks....block the line and see what happens.


Zag

Question here...
Is this engine a "zero clearance" engine? I dont wanna fool with it too much.

No it's not, play away 

OK. Here's what I did today.

Adjusted the timng belt one tooth each way. It runs best when set dead on... which it was when I pulled the cover.

While fooling with it, I found that the engine would flood out if it didn't fire quickly... in that, I also found fuel seeping between the throttle body and the little black spacer thingy that is under it.

On a whim, I pulled it.. since it has a burned/melted spot on it anyway. When I started it up, there was this HORRID squealing noise.. that sounds like either vaccum or air. I dunno.

Eitherway.. anyone got some idea exactly what purpose this thing serves?


OH! after i pulled it, I got the vaccum up to 12in...

It's a heating element for vaporizing the fuel as far as I am aware.

Sounds like you found part of your vacuum leak....keep searching.

Just a dumb thought....you don't have your firing order out 180 by chance?

Zag

Welp. That was part of the vaccum leak.

I had inspected the lines earlier, and I had already replaced the rubber hose that came off the intake and connected to the steel line on the firewall. The thing is.. the vaccum guage I am using was my Dad's and was stowed away under a pile of old tools and I just found it the other day.

I pulled the line and stuck my thumb over the hose and felt signifigant vaccum... the guage read 15in. I dug out some "ricer-red" hose that I had gotten cheap to put on the wife's Honda... and replaced the seemingly "perfect" rubber hose that went from the firewall to the booster. Vaccum guage read 15.5in.....

If we wind up on a trail run or any gathering, I owe you a beverage of your choice.

I'm probably gonna go stuff that thing back in the intake tomorrow... that noise is unbearable. I thought about taking the IPAQ out there and recording it and posting a link...

That thing is called the PTC (positive temperature coefficient)
and is for cold weather, I removed mine years ago, never
noticed any difference, and it will not reduce the noise, that is
typical throbbing sound the injector makes

Wild

My injector is already loud. I just have this loud horrid squealling noise... sounds like a whistle... but could be an internal vaccum leak.

I'll deal with it tomorrow.....

Find the last vacuum leak and you might find yerself up to 17-19" of vacuum, more power and better gas mileage.....

If the squeal developed after removing the element then it's probly a leak in that area...

Patience you will find it.

Zag

That thing is called the PTC (positive temperature coefficient)
and is for cold weather, I removed mine years ago, never
noticed any difference, and it will not reduce the noise, that is
typical throbbing sound the injector makes

Wild

Was that only on the early models? There isn't one on mine and its not in my FSM either.

Hey Rhino

     I've seen them on all the TBI Suzuki's, including the FWD's. Maybe its a cold weather thing
or something to do with North American emissions.

Zag

That's my guess too

Haynes says fitted to auto models. That figures, I've never seen one of those either, lol.

All the ones I've seen in Canada have this....

Must be due to our lack of heat.

Zag

Well, as you can see, the little heater thingy is/was shorted and burned... so it will not be back in the tracker. Things are moving right along... and I can see that before i finish, i'll have replaced every vaccum hose on the rig.