emissions problem - Pirate4x4.Com : 4x4 and Off-Road Forum

dheavychevy38 · 02-04-2005, 01:06 PM

OK i have a 89 k5 with a 350 that has 165,000 on it and i can't get to pass emissions eveytime i took it it was getting better and then yesterday it failed so bad the spec is 220 and it blew a 1525

. So i have done a ton of stuff trying to get it to pass and it just won't.

list of stuff done.
cap,wires,rotor
plugs
fixed any found vaccum leaks
advanced the timeing from 0-4
triple checked it with my scanner all sensors check out ok plus i ohmed them or checked for proper voltage
new cat
new o2
new temp sensor
So yesterday i came home to check for dead cylinder and compression wise the lowest was 148 highest was 160
plulled all the plugs the only one that concerned me was the #8 cylinder the plug was dripping with gas.
any ideas i changed the wires again and am waiting for my plugs to try it again any ideas please

cnay20 · 02-04-2005, 01:13 PM

can't pas NOx?

dheavychevy38 · 02-04-2005, 01:37 PM

sorry i can't pass hc

tweaker · 02-04-2005, 06:33 PM

did you try a quick rebuild of the injectors. it's like $40 at autozone and it's gaskets and internal filters. also the run it around town for a while to get the cat good and hot and higher octane gas also helps. clean thwe old k&n or new filter. oil change. fuel filter. check the pcv valve. clean the intake inside with carb cleaner while running. turn on the AC if it works. find some guy under the table for $100 on the side.

jae_wrench · 02-04-2005, 06:39 PM

an Hc count of 1000 is a dead cylinder for sure and what did you find one dead #8 is dead if you pulled the plug and it wet with fuel. Eather switch the plug with another cylinder or get a new on check for spark at the wire end. Fix the dead cylinder and it will pass

dheavychevy38 · 02-04-2005, 09:35 PM

ye i put all new plugs and wires going to check it out sat morning i just put new cap rotor and coil on 3 days ago but didn't have the other stuff yet the thing was running good so i took it for the test and it dropped the cylinder in teh test lane killed the truck and everything oh well hope it works.

02-04-2005, 01:06 PM	#1 (permalink)
dheavychevy38 Registered User Join Date: Sep 2004 Member # 35044 Posts: 27	emissions problem OK i have a 89 k5 with a 350 that has 165,000 on it and i can't get to pass emissions eveytime i took it it was getting better and then yesterday it failed so bad the spec is 220 and it blew a 1525 . So i have done a ton of stuff trying to get it to pass and it just won't. list of stuff done. cap,wires,rotor plugs fixed any found vaccum leaks advanced the timeing from 0-4 triple checked it with my scanner all sensors check out ok plus i ohmed them or checked for proper voltage new cat new o2 new temp sensor So yesterday i came home to check for dead cylinder and compression wise the lowest was 148 highest was 160 plulled all the plugs the only one that concerned me was the #8 cylinder the plug was dripping with gas. any ideas i changed the wires again and am waiting for my plugs to try it again any ideas please

02-04-2005, 06:33 PM	#4 (permalink)
tweaker Registered User Join Date: Jun 2004 Member # 32436 Location: Sacramento, CA USof Freakin A Posts: 103	did you try a quick rebuild of the injectors. it's like $40 at autozone and it's gaskets and internal filters. also the run it around town for a while to get the cat good and hot and higher octane gas also helps. clean thwe old k&n or new filter. oil change. fuel filter. check the pcv valve. clean the intake inside with carb cleaner while running. turn on the AC if it works. find some guy under the table for $100 on the side. __________________ [COLOR=Navy]"of all the things eye lost, eye ms. my mind the most" "can you stand on your head"[/COLOR]

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02-04-2005, 01:13 PM	#2 (permalink)
cnay20 Registered User Join Date: Jan 2005 Member # 41514 Location: akron, ohio Posts: 39	can't pas NOx?

02-04-2005, 01:37 PM	#3 (permalink)
dheavychevy38 Registered User Join Date: Sep 2004 Member # 35044 Posts: 27	sorry i can't pass hc

02-04-2005, 06:39 PM	#5 (permalink)
jae_wrench Registered User Join Date: Jul 2004 Member # 33446 Posts: 13	an Hc count of 1000 is a dead cylinder for sure and what did you find one dead #8 is dead if you pulled the plug and it wet with fuel. Eather switch the plug with another cylinder or get a new on check for spark at the wire end. Fix the dead cylinder and it will pass

02-04-2005, 09:35 PM	#6 (permalink)
dheavychevy38 Registered User Join Date: Sep 2004 Member # 35044 Posts: 27	ye i put all new plugs and wires going to check it out sat morning i just put new cap rotor and coil on 3 days ago but didn't have the other stuff yet the thing was running good so i took it for the test and it dropped the cylinder in teh test lane killed the truck and everything oh well hope it works.