CA Smog failure help
#1
CA Smog failure help
so my 1999 1500 conversion van failed Smog on emissions.
This could be for any number of reasons of course but I'm wondering where to start.
HC and NO were the culprits
@15mph HC was 138 (max allowed 46) and NO was 2112 (max allowed 488) so gross polluter status
@25mph HC was 43 (max allowed 29) and NO was 1269 (max allowed 741)
should I start with the less expensive EGR Valve before going for the expensive catalytic converter? (dread to think how much that might be)
any other tips?
This could be for any number of reasons of course but I'm wondering where to start.
HC and NO were the culprits
@15mph HC was 138 (max allowed 46) and NO was 2112 (max allowed 488) so gross polluter status
@25mph HC was 43 (max allowed 29) and NO was 1269 (max allowed 741)
should I start with the less expensive EGR Valve before going for the expensive catalytic converter? (dread to think how much that might be)
any other tips?
#3
#4
apologies for the lack of info
It's the 5.2 V8
Oil change was last year (maybe 800 miles ago), new spark plugs were fitted too (doesn't mean they haven't since failed of course and I suppose they are cheap enough that I could replace again)
as far as I know, O2 sensors have never been replaced so could be the originals
It's the 5.2 V8
Oil change was last year (maybe 800 miles ago), new spark plugs were fitted too (doesn't mean they haven't since failed of course and I suppose they are cheap enough that I could replace again)
as far as I know, O2 sensors have never been replaced so could be the originals