egr problems

[magoo_oner]

so ive been trying to smog my 81 malibu wagon the little 229 v6 is a pain in the *ss lol everything passes good exept the nox the smog man said it looks like its my egr and i got a second opinion from my neigboor who had a smog shop for years he added up some numbers and confermed it was my egr and not the catt. but my problem now is , is it the actuall egr valve or is it the egr solenoid how can i test i removed the egr valve and cleaned of all the caked up carbon and now it seems to sputter when i go to accelerate but seems to be fine after that any opinions

 

[tc1959]

so Ive been trying to smog my 81 malibu wagon the little 229 v6 is a pain in the *ss lol everything passes good except the nox the smog man said it looks like its my egr and i got a second opinion from my neighbor who had a smog shop for years he added up some numbers and confirmed it was my egr and not the Catt. but my problem now is , is it the actual egr valve or is it the egr solenoid how can i test i removed the egr valve and cleaned of all the caked up carbon and now it seems to sputter when i go to accelerate but seems to be fine after that any opinions

The ports to the EGR are usually plugged with carbon. I use a old piece of speedo cable in a cordless drill to "Roto Rooter " the passages in the intake manifold.. Egr valves are not that spendy. So replacing it is not a bad Idea.

 

[magoo_oner]

that doesnt sound like a bad idea with the spedo cable but how can i tell if its my egr valve or solenoid that is faulty is there a way to test either i tried pushing up on the diaphram of the egr and it does hesitate the motor or kills it i dont want to have to replace the egr if i dont need too

 

[tc1959]

that doesn't sound like a bad idea with the speedo cable but how can i tell if its my egr valve or solenoid that is faulty is there a way to test either i tried pushing up on the diaphragm of the grand it does hesitate the motor or kills it i don't want to have to replace the egr if i don't need too

You could test the solenoid with a vacuum gauge , But you will need a friend to apply the brakes and give it some gas ,watch the gauge and see if the solenoid allows vacuum at open throttle. Some EGR valves bleed vacuum and some don't. If every thing is working you should be able to feel the valve lift while Its being brake torqued.