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That's because I just found out that is a tool for throttle bodies.:L

My friend has the original GM gauge. .170" ID, ,220" OD, closed on one end, 1.305" length

I have a frien making the gauge for me. I will re-check everything, then if not happy, start on the vacuum leak procedure. I may even pull it, as I believe the secondary wind up is too tight. Arggghhh!!!

http://www.carburetion.com/quadnumber.htm

I thought the 2 after the year code was 49 state, and 5 is the Kalifornia code.

Gerry, I set the float to .420" per Lars. My understanding is the solenoid height is 1.305" with a gauge. The solenoid travel is 4/32", and the idle bleed is adjusted to obtain 30* at idle. (The idle bleed gauge is approximate till test run.) The TPS has been adjusted to .56 volts at curb idle...

It is correct for a non-kalifornia car.

Click on the 81 registry link above.

Well Gerry, I have to tetract that statement. The Carb builder called me and gave me an earfull. Says they NEVER switch carbs, period. I have to believe Bubba did it before I bought the car. Seeing as to what all I have encountered, It's not that much of a reach.:L Now I have to find out what...

17081518 5=California emmisions.

Near as I can tell from the codes: 170+= does not mean much 81=year 2=49 state/non-Kalifornia 1 or 2=Chevy Odds are Manual, evens are Auto So I believe you are correct/fine with those #s I show this one I have as 87 Cadillac with auto. Now, to see if the settings are the same.

I am beginning to think the carb guy pulled the old "switcharoo." My carb is # 17087132. I don't see it on the list.:rotfl

Thanks Gerry. I'll go digest this. I have all the tools but the M/C gauge. I have the dimensions to make one though. 1.305"x.170"x.220". Wish I could just find a part# for one that was still in production.

Send it back.

Okay, from a Snap-on Scanner book. Connect pos. lead of voltmeter to pin E, (far left), connect neg. lead to batt - term. Should read .1 volt or less To test for open ground, jumper D to E, then reread voltage. Should read 50 millivolts. If 5 volts, ground is open. Pin D should read 5 volts to...

ADL Terminal testing/ '81 5 pin Okay, from a Snap-on Scanner book. Connect pos. lead of voltmeter to pin E, (far left), connect neg. lead to batt - term. Should read .1 volt or less To test for open ground, jumper D to E, then reread voltage. Should read 50 millivolts. If 5 volts, ground is...

I think you are reading pin A and B Okay, from a Snap-on Scanner book. Connect pos. lead of voltmeter to pin E, (far left), connect neg. lead to batt - term. Should read .1 volt or less To test for open ground, jumper D to E, then reread voltage. Should read 50 millivolts. If 5 volts, ground...

I tried 4 1/2 turns. Threw the dwell off so far, I almost had to take the idle bleed screw out to get 30* dwell. 3 3/4 turns is the 3rd setting I have heard. I'll look at the Roe book. I am hot, and very discouraged today.:mad

I have that tool. Wondered what it was. $10. says I have to pull the air horn back off to use it. Let me know. Thanks.