Will it Pass? (emissions) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

383drvr · 10-30-2004, 08:29 PM

I hate testing.... My Burb (Goodwrench 350) has started smoking upon (harder) acceleration lately. It doesnt smoke when idling that I can tell, and the emissions equipment is still all intact. Should I worry?

If the prognosis is bad, I have a shady fallback position. I can take it to a tester who will pass it under the table for $100, but dont particularly want to do this.

Just need to decide on which tester to take it to, the $30 one, or the $100 one. Thanks

*1972C10* · 10-30-2004, 09:12 PM

Sounds like carb is out of adjustment or in need of a rebuild. Might try to tune ithe carb up before taking it to get tested

383drvr · 10-30-2004, 09:41 PM

Its bluish smoke if that makes a difference, but I'll look into the carb rebuild. It was sitting unused for ~2 years before I brought it home. 160k miles BTW. Thanks for the tip

6772king · 11-10-2004, 09:48 AM

Just Got My '86 Inspected "exempt", Just Took The Old Insp. Sticker Off So They Didn't Know Last Years Mileage, Then Claimed "less Than 5000 Miles A Year", & I'll Be Damned If It Didn't Work.

6772king · 11-10-2004, 09:49 AM

P.S. I'M NOT THE "REAL KING", JUST HIS BUDDY @ WORK, DIDN'T REALIZE HE HAD THIS SET UP w/ HIS USER NAME.

Jonboy · 11-10-2004, 10:29 AM

yep. Honestly, I would go the $100 route if you don't think it will pass. Also, you can get a one year exemption if you spend more than $250 in repairs, and it still will not pass. It is on the TxDOT website with details.

383drvr · 11-11-2004, 08:16 PM

Thanks for the info guys, I'm still thinking about what to do while I'm still working on it.

SCOTI · 11-11-2004, 08:43 PM

I know this will sound weird but why not tune it up & try to do things legally first. Only go to the dark side if it won't pass. But.... don't change your oil until minutes before the inspection. Clean, fresh oil will help pass almost anything. My 93 5.0 Stang passed w/o a tune-up, 115K miles, & no cats/true duals. I simply changed the oil so there was no excess gas/HC's/Co's (pollutants) to be heated/burned. It's an old tip I learned from the guy that used to do my inspections. My vehicles were always an area of concern since I'm guilty of 'loosely interpeting' gov regulations

.

383drvr · 11-11-2004, 09:21 PM

I'd love to do it legally. Its a two hour drive and thrice the price to do it shady. But I think its the valve seals or rings and I dont have the time or money to repair them myself.

I like the idea of a quick oil change though. But how will that affect a smoking engine? Thanks for the tip!

SCOTI · 11-11-2004, 11:23 PM

Clean oil doesn't have all the residuals vs. used oil . . .... especially oil that's subjected to leaky valve seats/gas.

Quote:

383drvr.... It doesnt smoke when idling that I can tell, and the emissions equipment is still all intact.

I think only an ass would fail it for smoking & since it doesn't seem to be too bad @ idle + still has the legal stuff/equip you shouldn't have a problem. What year model is it?

383drvr · 11-16-2004, 03:08 PM

Its an 86.

BTW, I just rebuilt the carb and replaced some vacuum lines. No more rough idle and backfires, but I need to have a pro tune the carb, (I got it pretty close).

The engine smokes on startup and gives a puff when you jump on the gas, that means valve seals, right? How hard is that for a shadetree mechanic with no garage/tools?

Do you have any friendly inspector contacts Scoti?

Thanks

10-30-2004, 08:29 PM	#1
383drvr Registered User Join Date: Oct 2003 Location: Dallas, Tx. Posts: 308	Will it Pass? (emissions) I hate testing.... My Burb (Goodwrench 350) has started smoking upon (harder) acceleration lately. It doesnt smoke when idling that I can tell, and the emissions equipment is still all intact. Should I worry? If the prognosis is bad, I have a shady fallback position. I can take it to a tester who will pass it under the table for $100, but dont particularly want to do this. Just need to decide on which tester to take it to, the $30 one, or the $100 one. Thanks

11-10-2004, 09:48 AM	#4
6772king Registered User Join Date: Feb 2002 Location: grove city pa usa Posts: 628	Just Got My '86 Inspected "exempt", Just Took The Old Insp. Sticker Off So They Didn't Know Last Years Mileage, Then Claimed "less Than 5000 Miles A Year", & I'll Be Damned If It Didn't Work. __________________ 67 chevy short step 2wd 427 71 chevy short fleet 4x4 396 72 gmc jimmy 2wd 377 71 chevy blazer 4x4 454 69 chevy longhorn 5.9l cummins 72 chevy 400 2wd custom camper 67 chevy lwb 4x4 454-in pieces 67 chevy panel soon 4x4-400 67 gmc dump 4x4 1 ton-305 WTF!! 72 chevy 3/4 ton 4x4 burb 350 70 chevy panel 2wd 302 5 speed tko "THERE IS NO REPLACMENT FOR DISPLACMENT"!!!!!!!

11-10-2004, 09:49 AM	#5
6772king Registered User Join Date: Feb 2002 Location: grove city pa usa Posts: 628	P.S. I'M NOT THE "REAL KING", JUST HIS BUDDY @ WORK, DIDN'T REALIZE HE HAD THIS SET UP w/ HIS USER NAME. __________________ 67 chevy short step 2wd 427 71 chevy short fleet 4x4 396 72 gmc jimmy 2wd 377 71 chevy blazer 4x4 454 69 chevy longhorn 5.9l cummins 72 chevy 400 2wd custom camper 67 chevy lwb 4x4 454-in pieces 67 chevy panel soon 4x4-400 67 gmc dump 4x4 1 ton-305 WTF!! 72 chevy 3/4 ton 4x4 burb 350 70 chevy panel 2wd 302 5 speed tko "THERE IS NO REPLACMENT FOR DISPLACMENT"!!!!!!!

11-10-2004, 10:29 AM	#6
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	yep. Honestly, I would go the $100 route if you don't think it will pass. Also, you can get a one year exemption if you spend more than $250 in repairs, and it still will not pass. It is on the TxDOT website with details. __________________ 1974 Jimmy- 5.3/4L80e/NP241

11-11-2004, 08:43 PM	#8
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,025	I know this will sound weird but why not tune it up & try to do things legally first. Only go to the dark side if it won't pass. But.... don't change your oil until minutes before the inspection. Clean, fresh oil will help pass almost anything. My 93 5.0 Stang passed w/o a tune-up, 115K miles, & no cats/true duals. I simply changed the oil so there was no excess gas/HC's/Co's (pollutants) to be heated/burned. It's an old tip I learned from the guy that used to do my inspections. My vehicles were always an area of concern since I'm guilty of 'loosely interpeting' gov regulations . __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

10-30-2004, 09:12 PM	#2
1972C10 Account Suspended Join Date: Dec 2003 Location: Texas Posts: 2,686	Sounds like carb is out of adjustment or in need of a rebuild. Might try to tune ithe carb up before taking it to get tested

10-30-2004, 09:41 PM	#3
383drvr Registered User Join Date: Oct 2003 Location: Dallas, Tx. Posts: 308	Its bluish smoke if that makes a difference, but I'll look into the carb rebuild. It was sitting unused for ~2 years before I brought it home. 160k miles BTW. Thanks for the tip

11-11-2004, 08:16 PM	#7
383drvr Registered User Join Date: Oct 2003 Location: Dallas, Tx. Posts: 308	Thanks for the info guys, I'm still thinking about what to do while I'm still working on it.

11-11-2004, 09:21 PM	#9
383drvr Registered User Join Date: Oct 2003 Location: Dallas, Tx. Posts: 308	I'd love to do it legally. Its a two hour drive and thrice the price to do it shady. But I think its the valve seals or rings and I dont have the time or money to repair them myself. I like the idea of a quick oil change though. But how will that affect a smoking engine? Thanks for the tip!

11-16-2004, 03:08 PM	#11
383drvr Registered User Join Date: Oct 2003 Location: Dallas, Tx. Posts: 308	Its an 86. BTW, I just rebuilt the carb and replaced some vacuum lines. No more rough idle and backfires, but I need to have a pro tune the carb, (I got it pretty close). The engine smokes on startup and gives a puff when you jump on the gas, that means valve seals, right? How hard is that for a shadetree mechanic with no garage/tools? Do you have any friendly inspector contacts Scoti? Thanks



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