Fiero sensitive to the weather? (Page 2/3)
Tony Kania APR 17, 02:01 PM
I use WindexR to search for vac leaks. Spray it on suspected areas and listen for a difference in engine sound. You do not have to soak an area, just begin misting while the engine runs. I have done this for over 30 plus years without an issue.

It works great for spark plug jumping. Inspect in the dark for best results.


cebix APR 17, 06:06 PM
You might be right about the intake manifold gasket. When it gets hot enough it seals up just enough so it'll run fine.

I know this from experience as I had no gasket at all - just RTV.

EDIT: We don't have Windex here per se. Does it have alcohol in it?

[This message has been edited by cebix (edited 04-17-2018).]

Tony Kania APR 17, 06:59 PM
Blue window cleaner. No alcohol.
cebix APR 18, 01:20 PM
According to the ingredients it has 2-(Hexyloxy)ethanol.

I asked this because I was wondering how your engine reacts to Windex. Does it stumble when you find the leak or does it rev up?
Chris Eddy APR 18, 01:21 PM
I did have a bad MAT sensor, did not throw a code, but borrowing a code reader (87 duke has 8192bps) I could see that it was wrong. That did not affect running though.
I do have a cold start issue.. it will reliably start, but runs rough for 3 minutes. I suspect that it has an intake manifold leak maybe. I have scoured it for vacuum leaks.
It will live like that until the big swap in the sky.
Patrick APR 18, 02:51 PM

quote
Originally posted by Newguy7142:

I've heard that the fiero acts/drives different when the weather changes (warm/cold) is this true?



I can't say that weather makes much of a difference with how a properly tuned Fiero runs. I've daily-driven four different Fieros (two 2.5, two 2.8) over the last 20 years and each one ran fine in all weather conditions once the bugs were worked out (although the '87 duke was the most troublesome by far).


quote
Originally posted by Newguy7142:

My idle has been acting strange lately. Nothing too serious and no ses light, but still.



I posted yesterday Here about an EGR valve issue I had. In my particular situation, the problem was obvious... but considering how bad the idle was (with a wide open EGR valve), I can certainly see how a slightly sticking (open) EGR valve could cause idle issues. How often do we ever check for the EGR valve's ability to close properly?

[This message has been edited by Patrick (edited 04-18-2018).]

Tony Kania APR 18, 09:46 PM

quote
Originally posted by cebix:

According to the ingredients it has 2-(Hexyloxy)ethanol.

I asked this because I was wondering how your engine reacts to Windex. Does it stumble when you find the leak or does it rev up?




It stumbles.
cebix APR 19, 11:18 AM

quote
Originally posted by Tony Kania:
It stumbles.



Thanks. So I guess spraying a mist of water should do the trick as well?
Gall757 APR 19, 11:46 AM

quote
Originally posted by cebix:


Thanks. So I guess spraying a mist of water should do the trick as well?



The spray bottle is the key. Windex comes in a really good spray bottle.....fine mist and lots of it. Makes it easier to shoot at a specific spot.
Tony Kania APR 19, 02:14 PM

quote
Originally posted by Gall757:


The spray bottle is the key. Windex comes in a really good spray bottle.....fine mist and lots of it. Makes it easier to shoot at a specific spot.




Pretty much. The Windex is nice because it bubbles up. You can often see a bubble being sucked in by a vac leak.

I also use it to find leaks in tires, gas lines, and such. It bubbles like crazy when sprayed on a leaking bike valve that you cannot locate. I test every gas connection with Windex also after installing an appliance. I have done this hundreds of times over my life.

It does not hurt anything either. I guess it could, but I do things my way and rarely have an issue after decades.

When it comes to the spark jumping test, I still use Windex. Just always have. Water could work just as well I suppose in this application.

I sound like I work for them. I do not, but I am just really clean and organized.