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Re: Ping revisited
In message <BCBB9D5B.33822%nospam@thanksImFull.spam>, "KurtS" wrote:
>Hrm. When I back it off from 9 deg BTDC, idle falls to crap. Looks like I >have some more vac issue hunting. tnx Bill. IF you're setting the timing at idle speed, you're way too advanced. Set it to 9 degrees with the vac advance hose disconnected and plugged, vacuum switch assy electrical connector unplugged, and engine running at 1600 RPM. Could also be your knock sensor has gone south. > >> From: L.W.(ßill) ------ III <----------@cox.net> >> Organization: Not@Home >> Newsgroups: rec.autos.makers.jeep+willys >> Date: Sun, 02 May 2004 12:31:21 -0700 >> Subject: Re: Ping revisited >> >> You're too far advanced, when you stick your foot in it your vacuum >> advance has less vacuum therefore retards the spark to a place it can >> burn the gas. |
Re: Ping revisited
In message <BCBB9D5B.33822%nospam@thanksImFull.spam>, "KurtS" wrote:
>Hrm. When I back it off from 9 deg BTDC, idle falls to crap. Looks like I >have some more vac issue hunting. tnx Bill. IF you're setting the timing at idle speed, you're way too advanced. Set it to 9 degrees with the vac advance hose disconnected and plugged, vacuum switch assy electrical connector unplugged, and engine running at 1600 RPM. Could also be your knock sensor has gone south. > >> From: L.W.(ßill) ------ III <----------@cox.net> >> Organization: Not@Home >> Newsgroups: rec.autos.makers.jeep+willys >> Date: Sun, 02 May 2004 12:31:21 -0700 >> Subject: Re: Ping revisited >> >> You're too far advanced, when you stick your foot in it your vacuum >> advance has less vacuum therefore retards the spark to a place it can >> burn the gas. |
Re: Ping revisited
In message <BCBB9D5B.33822%nospam@thanksImFull.spam>, "KurtS" wrote:
>Hrm. When I back it off from 9 deg BTDC, idle falls to crap. Looks like I >have some more vac issue hunting. tnx Bill. IF you're setting the timing at idle speed, you're way too advanced. Set it to 9 degrees with the vac advance hose disconnected and plugged, vacuum switch assy electrical connector unplugged, and engine running at 1600 RPM. Could also be your knock sensor has gone south. > >> From: L.W.(ßill) ------ III <----------@cox.net> >> Organization: Not@Home >> Newsgroups: rec.autos.makers.jeep+willys >> Date: Sun, 02 May 2004 12:31:21 -0700 >> Subject: Re: Ping revisited >> >> You're too far advanced, when you stick your foot in it your vacuum >> advance has less vacuum therefore retards the spark to a place it can >> burn the gas. |
Re: Ping revisited
Sorry for taking so long to get back into the conversation I started. Life
is busy right now... The knock sensor was my next guess. I actually had time to really dig into the thing this weekend and found that the shop had a really screwy idea about proper vac line reconnection, even with the diagram I gave them before the work started. I found the distributor hooked up to ported vacuum and the manifold vac nipple wide open. A couple of others were just hanging loose. Sheesh. Odd that it ran so smoothly for the first 1000 miles. I did have the timing set 9 deg BTDC @ 1600 so that wasn't it. We'll see how things go from here. Mike R: I think I was unclear on the ping frequency. It wasn't doing it all the time at cruise - only when I goosed it a *little*. I'd give it more pedal and the knock disappeared. Never pinged on hills or hard acceleration, just most frequent in the pedal range that was *just* past where cruising speed sits. Someone mentioned jet size as a possible problem. I didn't realize Carter BBDs have optional sizes available. Who sells them? I thought I'd check it out if I end up tearing the carb apart. > From: bllsht <nospam@invaliddot.net> > Reply-To: nospam@dot.net > Newsgroups: rec.autos.makers.jeep+willys > Date: Tue, 04 May 2004 22:38:05 -0700 > Subject: Re: Ping revisited > > IF you're setting the timing at idle speed, you're way too advanced. > > Set it to 9 degrees with the vac advance hose disconnected and plugged, vacuum > switch assy electrical connector unplugged, and engine running at 1600 RPM. > > Could also be your knock sensor has gone south. |
Re: Ping revisited
Sorry for taking so long to get back into the conversation I started. Life
is busy right now... The knock sensor was my next guess. I actually had time to really dig into the thing this weekend and found that the shop had a really screwy idea about proper vac line reconnection, even with the diagram I gave them before the work started. I found the distributor hooked up to ported vacuum and the manifold vac nipple wide open. A couple of others were just hanging loose. Sheesh. Odd that it ran so smoothly for the first 1000 miles. I did have the timing set 9 deg BTDC @ 1600 so that wasn't it. We'll see how things go from here. Mike R: I think I was unclear on the ping frequency. It wasn't doing it all the time at cruise - only when I goosed it a *little*. I'd give it more pedal and the knock disappeared. Never pinged on hills or hard acceleration, just most frequent in the pedal range that was *just* past where cruising speed sits. Someone mentioned jet size as a possible problem. I didn't realize Carter BBDs have optional sizes available. Who sells them? I thought I'd check it out if I end up tearing the carb apart. > From: bllsht <nospam@invaliddot.net> > Reply-To: nospam@dot.net > Newsgroups: rec.autos.makers.jeep+willys > Date: Tue, 04 May 2004 22:38:05 -0700 > Subject: Re: Ping revisited > > IF you're setting the timing at idle speed, you're way too advanced. > > Set it to 9 degrees with the vac advance hose disconnected and plugged, vacuum > switch assy electrical connector unplugged, and engine running at 1600 RPM. > > Could also be your knock sensor has gone south. |
Re: Ping revisited
Sorry for taking so long to get back into the conversation I started. Life
is busy right now... The knock sensor was my next guess. I actually had time to really dig into the thing this weekend and found that the shop had a really screwy idea about proper vac line reconnection, even with the diagram I gave them before the work started. I found the distributor hooked up to ported vacuum and the manifold vac nipple wide open. A couple of others were just hanging loose. Sheesh. Odd that it ran so smoothly for the first 1000 miles. I did have the timing set 9 deg BTDC @ 1600 so that wasn't it. We'll see how things go from here. Mike R: I think I was unclear on the ping frequency. It wasn't doing it all the time at cruise - only when I goosed it a *little*. I'd give it more pedal and the knock disappeared. Never pinged on hills or hard acceleration, just most frequent in the pedal range that was *just* past where cruising speed sits. Someone mentioned jet size as a possible problem. I didn't realize Carter BBDs have optional sizes available. Who sells them? I thought I'd check it out if I end up tearing the carb apart. > From: bllsht <nospam@invaliddot.net> > Reply-To: nospam@dot.net > Newsgroups: rec.autos.makers.jeep+willys > Date: Tue, 04 May 2004 22:38:05 -0700 > Subject: Re: Ping revisited > > IF you're setting the timing at idle speed, you're way too advanced. > > Set it to 9 degrees with the vac advance hose disconnected and plugged, vacuum > switch assy electrical connector unplugged, and engine running at 1600 RPM. > > Could also be your knock sensor has gone south. |
Re: Ping revisited
Sorry for taking so long to get back into the conversation I started. Life
is busy right now... The knock sensor was my next guess. I actually had time to really dig into the thing this weekend and found that the shop had a really screwy idea about proper vac line reconnection, even with the diagram I gave them before the work started. I found the distributor hooked up to ported vacuum and the manifold vac nipple wide open. A couple of others were just hanging loose. Sheesh. Odd that it ran so smoothly for the first 1000 miles. I did have the timing set 9 deg BTDC @ 1600 so that wasn't it. We'll see how things go from here. Mike R: I think I was unclear on the ping frequency. It wasn't doing it all the time at cruise - only when I goosed it a *little*. I'd give it more pedal and the knock disappeared. Never pinged on hills or hard acceleration, just most frequent in the pedal range that was *just* past where cruising speed sits. Someone mentioned jet size as a possible problem. I didn't realize Carter BBDs have optional sizes available. Who sells them? I thought I'd check it out if I end up tearing the carb apart. > From: bllsht <nospam@invaliddot.net> > Reply-To: nospam@dot.net > Newsgroups: rec.autos.makers.jeep+willys > Date: Tue, 04 May 2004 22:38:05 -0700 > Subject: Re: Ping revisited > > IF you're setting the timing at idle speed, you're way too advanced. > > Set it to 9 degrees with the vac advance hose disconnected and plugged, vacuum > switch assy electrical connector unplugged, and engine running at 1600 RPM. > > Could also be your knock sensor has gone south. |
Re: Ping revisited
You could maybe have had the timing not advancing right from the open
port. Have you tried it with the vacuum fixed up? You are not describing a timing ping though. Pinging or spark knock happens under load, the more load the more knock. It is the gas pre igniting in the cylinders. Having a 'rattle' or knock when you get lightly on the pedal is a loose part, loose exhaust, loose something. A loose rod bearing cap can act like that. My stethoscope recommendation still stands.... The carter does have an adjustment inside for the gas metering rods. I find when the are not right, the acceleration doesn't match up with the gas pedal. Open too much and the best acceleration is at say 3/4 of the way down on the pedal. Not enough and you don't get full power at full throttle. Mike KurtS wrote: > > Sorry for taking so long to get back into the conversation I started. Life > is busy right now... > > The knock sensor was my next guess. I actually had time to really dig into > the thing this weekend and found that the shop had a really screwy idea > about proper vac line reconnection, even with the diagram I gave them before > the work started. I found the distributor hooked up to ported vacuum and the > manifold vac nipple wide open. A couple of others were just hanging loose. > Sheesh. Odd that it ran so smoothly for the first 1000 miles. > > I did have the timing set 9 deg BTDC @ 1600 so that wasn't it. We'll see how > things go from here. > > Mike R: I think I was unclear on the ping frequency. It wasn't doing it all > the time at cruise - only when I goosed it a *little*. I'd give it more > pedal and the knock disappeared. Never pinged on hills or hard acceleration, > just most frequent in the pedal range that was *just* past where cruising > speed sits. > > Someone mentioned jet size as a possible problem. I didn't realize Carter > BBDs have optional sizes available. Who sells them? I thought I'd check it > out if I end up tearing the carb apart. > > > From: bllsht <nospam@invaliddot.net> > > Reply-To: nospam@dot.net > > Newsgroups: rec.autos.makers.jeep+willys > > Date: Tue, 04 May 2004 22:38:05 -0700 > > Subject: Re: Ping revisited > > > > IF you're setting the timing at idle speed, you're way too advanced. > > > > Set it to 9 degrees with the vac advance hose disconnected and plugged, vacuum > > switch assy electrical connector unplugged, and engine running at 1600 RPM. > > > > Could also be your knock sensor has gone south. |
Re: Ping revisited
You could maybe have had the timing not advancing right from the open
port. Have you tried it with the vacuum fixed up? You are not describing a timing ping though. Pinging or spark knock happens under load, the more load the more knock. It is the gas pre igniting in the cylinders. Having a 'rattle' or knock when you get lightly on the pedal is a loose part, loose exhaust, loose something. A loose rod bearing cap can act like that. My stethoscope recommendation still stands.... The carter does have an adjustment inside for the gas metering rods. I find when the are not right, the acceleration doesn't match up with the gas pedal. Open too much and the best acceleration is at say 3/4 of the way down on the pedal. Not enough and you don't get full power at full throttle. Mike KurtS wrote: > > Sorry for taking so long to get back into the conversation I started. Life > is busy right now... > > The knock sensor was my next guess. I actually had time to really dig into > the thing this weekend and found that the shop had a really screwy idea > about proper vac line reconnection, even with the diagram I gave them before > the work started. I found the distributor hooked up to ported vacuum and the > manifold vac nipple wide open. A couple of others were just hanging loose. > Sheesh. Odd that it ran so smoothly for the first 1000 miles. > > I did have the timing set 9 deg BTDC @ 1600 so that wasn't it. We'll see how > things go from here. > > Mike R: I think I was unclear on the ping frequency. It wasn't doing it all > the time at cruise - only when I goosed it a *little*. I'd give it more > pedal and the knock disappeared. Never pinged on hills or hard acceleration, > just most frequent in the pedal range that was *just* past where cruising > speed sits. > > Someone mentioned jet size as a possible problem. I didn't realize Carter > BBDs have optional sizes available. Who sells them? I thought I'd check it > out if I end up tearing the carb apart. > > > From: bllsht <nospam@invaliddot.net> > > Reply-To: nospam@dot.net > > Newsgroups: rec.autos.makers.jeep+willys > > Date: Tue, 04 May 2004 22:38:05 -0700 > > Subject: Re: Ping revisited > > > > IF you're setting the timing at idle speed, you're way too advanced. > > > > Set it to 9 degrees with the vac advance hose disconnected and plugged, vacuum > > switch assy electrical connector unplugged, and engine running at 1600 RPM. > > > > Could also be your knock sensor has gone south. |
Re: Ping revisited
You could maybe have had the timing not advancing right from the open
port. Have you tried it with the vacuum fixed up? You are not describing a timing ping though. Pinging or spark knock happens under load, the more load the more knock. It is the gas pre igniting in the cylinders. Having a 'rattle' or knock when you get lightly on the pedal is a loose part, loose exhaust, loose something. A loose rod bearing cap can act like that. My stethoscope recommendation still stands.... The carter does have an adjustment inside for the gas metering rods. I find when the are not right, the acceleration doesn't match up with the gas pedal. Open too much and the best acceleration is at say 3/4 of the way down on the pedal. Not enough and you don't get full power at full throttle. Mike KurtS wrote: > > Sorry for taking so long to get back into the conversation I started. Life > is busy right now... > > The knock sensor was my next guess. I actually had time to really dig into > the thing this weekend and found that the shop had a really screwy idea > about proper vac line reconnection, even with the diagram I gave them before > the work started. I found the distributor hooked up to ported vacuum and the > manifold vac nipple wide open. A couple of others were just hanging loose. > Sheesh. Odd that it ran so smoothly for the first 1000 miles. > > I did have the timing set 9 deg BTDC @ 1600 so that wasn't it. We'll see how > things go from here. > > Mike R: I think I was unclear on the ping frequency. It wasn't doing it all > the time at cruise - only when I goosed it a *little*. I'd give it more > pedal and the knock disappeared. Never pinged on hills or hard acceleration, > just most frequent in the pedal range that was *just* past where cruising > speed sits. > > Someone mentioned jet size as a possible problem. I didn't realize Carter > BBDs have optional sizes available. Who sells them? I thought I'd check it > out if I end up tearing the carb apart. > > > From: bllsht <nospam@invaliddot.net> > > Reply-To: nospam@dot.net > > Newsgroups: rec.autos.makers.jeep+willys > > Date: Tue, 04 May 2004 22:38:05 -0700 > > Subject: Re: Ping revisited > > > > IF you're setting the timing at idle speed, you're way too advanced. > > > > Set it to 9 degrees with the vac advance hose disconnected and plugged, vacuum > > switch assy electrical connector unplugged, and engine running at 1600 RPM. > > > > Could also be your knock sensor has gone south. |
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