Red UFO

Redrum,

Can't wait to see it put back together.

hacker-pschorr

I'm doing mine the lazy way with a hood crest, just cutting the mounting pins off.

2V4V

PorKen,

Ooops, you did the hose removal thing too. Sorry, sloppy read on my part.

Randy,

That is freakin' clean. Very nice. Very nice indeed.

Greg

PorKen

"The cold air injector thing, any way to test that?"

9-volt battery.
...

gbryron,

I added that bit during the 15min edit window, you posted while I was editing.

hacker-pschorr

Randy, after a close inspection of your motor, where is the top hose of your oil can going?

On your lower radiator hose, is that a temp sensor zip tied to it? Is that more of a FYI hookup or are you running something special off that?

Can anybody answer my question about the cold start valve? Any way to test that?

EDIT - Damn you Porken, you slide in before my post. So if you hook up a 9-volt battery, it should open? When I look through it, it looks like that round thing spins and has a hole in it to allow air through. Right now it's half open.

2V4V

Round 'disc-thing' is hooked up to a bi-metallic spring.

Basically, electricity applied to the heater in the unit causes the 'spring' to expand and forces the disc to a closed position.

Take it off, and put it in the freezer. If it closes, you're halfway home.

Pull it out of the freezer (should be closed).

Do PorKen's 9v battery thing (never tried that, I have a couple of lab-type variable power supplies, so I use 12.5V) should open fully in the 3-5 minute range. Some as long as 10 minutes.

Those things are usually pretty bulletproof. I've seen them go well over 20 years (mine has) with no issues.

HTH,

Greg

PorKen

Hacker-Pschorr,

Sorry, I thought you were asking about the injector.

I don't know how to test the air bypass valve. I deleted mine.

hacker-pschorr

SWEET!! That is the thread I was looking for. I bascially plan to do what you did. I remember'd that post from when you originally posted it but I could not remember who did. Awesome!

Ok smart guy - how about a good way to test/clean my fuel injectors.

bcdavis

On some cars it goes directly down into the intake manifold.
On other cars it goes into the airbox.

My guess is that because the tube to the intake runs downwards, and has high vaccuum,
it sucks up lots of oil mist. Which is bad. So they routed it to the air cleaner...
Still has suction, to suck up the crankcase vapors, but not as much oil mist
will get into the intake...

PorKen

Hacker-Pschorr,

Always check here first, for unusual '81 related info.

I remember a post about using a 9-volt battery and compressed air to clean/test a while back. I checked mine for operation only with the 9-volt.

Randy V

Hacker - what BC said - into the air box.

Re. the coolant hose sensor - I've never seen this on another car. It was there when I bought it and appears to be a stock heat sensor that is part of the main wiring harness. I had always assumed that it controls the secondary electrical fan switch, but have never tested it to confirm.

You or anyone else have any ideas what else it may be?

hacker-pschorr

Awesome, something to read on the 2nd half of my day.

I need to find some way to test the spray pattern of my injectors. With the SC going on, now would be a good time to find a bad injector. Not later when I start running a very lean cylinder at 6-8 psi due to a bad injector.

hacker-pschorr

Randy,
Reason why I was wondering is because part of the SC kit will be electric fans for the 16V models. I currently have them running on my car to test the fitment. I need to find a way to trigger them by temp. I was going to hack into the temp/thermo sensor in front of the radiator. From what I've read about this, it will be enough to trigger a relay for the fans.

PorKen

Here's the post I was think of: Testing and Cleaning Injectors at home!!!!

If you're slapping a blower on there, I would send your injectors out for professional inspection and cleaning.

I had problems with the '84 injectors I have installed now, which I bought off eBay, they were sticky; one stuck open and made a lake of gasoline in the muffler (in place of the cat). They eventually cleaned up fine.

BC

Damn Man. Be careful. I went from that to a totally enginless, transless, interiorless 89S4. Slippery slope. I mean, why not just pull the engine and do some bore cleanup, new pistons, etc?