wimberosa
SILVER Star
I've been going through trying to diagnose rough idle and first order of business was replacing alternator. Now I'm getting proper 14.5 amps when running and still rough idle. I've had it running some and testing brakes....so even though i had a rough idle...seemed I was correcting some issues.
However in tandem I was testing for vacuum leaks via smoke test and mistakenly left a rubber cap across the carburetor during start (left it there after prior non-engine-running smoke test). Yes...yes...yes....idiotic. This basically choked off all air and it would not start. Kicked it over for a good minute+ before I realized that. That flooded it. Pulled all the plugs to clean which had fouled and pulled the catalytic converter off to inspect because carbonized looking fuel ran down the exhaust pipe and leaked out around the cat connection.
Everything is back in, and let fuel evaporate for a couple of days. Throttle and choke appear to work correctly. However, now she won't start and backfires through the carb.
Looking for potential likely candidates to hunt down first.
1. Fuel / air mixture is wrong? Have I introduced some new vacuum leak by asphixiating the carb.
2. Did this carb asphixiation somehow throw the timing off?
3. Do I need to open it up and inspect the valves to see if something is stuck? Not sure how this would have triggered that.
4. Obviously its not running now, so not completely sure how I can examine the timing now.
Suggestions are going to have slow answers but suggestions are appreciated. I'm going to have to learn more. First lesson was "don't asphixiate the carb".
However in tandem I was testing for vacuum leaks via smoke test and mistakenly left a rubber cap across the carburetor during start (left it there after prior non-engine-running smoke test). Yes...yes...yes....idiotic. This basically choked off all air and it would not start. Kicked it over for a good minute+ before I realized that. That flooded it. Pulled all the plugs to clean which had fouled and pulled the catalytic converter off to inspect because carbonized looking fuel ran down the exhaust pipe and leaked out around the cat connection.
Everything is back in, and let fuel evaporate for a couple of days. Throttle and choke appear to work correctly. However, now she won't start and backfires through the carb.
Looking for potential likely candidates to hunt down first.
1. Fuel / air mixture is wrong? Have I introduced some new vacuum leak by asphixiating the carb.
2. Did this carb asphixiation somehow throw the timing off?
3. Do I need to open it up and inspect the valves to see if something is stuck? Not sure how this would have triggered that.
4. Obviously its not running now, so not completely sure how I can examine the timing now.
Suggestions are going to have slow answers but suggestions are appreciated. I'm going to have to learn more. First lesson was "don't asphixiate the carb".
