Civic misses under load
Hi Guys,
I have an '80 Civic 1300 DX Manual 5-speed with under 50,000 miles. When driving at a low speed and accelerating, the car starts missing and bucking badly. I've checked mostly everything imaginable -- so many vacuum lines and solenoids! Since the carburetor has been rebuilt and adjusted (including the float levels), I suspected a leak in one of the vacuum lines. But they seem OK. I checked the advance, both vacuum and mechanical and the spark advances when speeding up the engine. Any suggestions? Thanks in advance, Ed -- _________________________________________ For sports news about the Milwaukee area, visit: http://home.wi.rr.com/edmat For news about your golf league, visit: http://seniorparplusgolf.com |
Re: Civic misses under load
In article <W1_ab.11415$eX1.5022@twister.rdc-kc.rr.com>, "Ed Matarrese"
<ematarrese@wi.rr.com> wrote: > Hi Guys, > > I have an '80 Civic 1300 DX Manual 5-speed with under 50,000 miles. When > driving at a low speed and accelerating, the car starts missing and bucking > badly. I've checked mostly everything imaginable -- so many vacuum lines > and solenoids! Since the carburetor has been rebuilt and adjusted > (including the float levels), I suspected a leak in one of the vacuum lines. > But they seem OK. I checked the advance, both vacuum and mechanical and the > spark advances when speeding up the engine. > > Any suggestions? > > Thanks in advance, You should check your maint. schedule. If you have not had a tune-up in over two years, you should visit a Honda dealership or mechanic that you trust and have them do a tune-up. Tell the mechanic about your specific problems. The mechanic will hook your Civic up to a computerized tester and should be able to determine the source of the problem. |
Re: Civic misses under load
In article <W1_ab.11415$eX1.5022@twister.rdc-kc.rr.com>, "Ed Matarrese"
<ematarrese@wi.rr.com> wrote: > Hi Guys, > > I have an '80 Civic 1300 DX Manual 5-speed with under 50,000 miles. When > driving at a low speed and accelerating, the car starts missing and bucking > badly. I've checked mostly everything imaginable -- so many vacuum lines > and solenoids! Since the carburetor has been rebuilt and adjusted > (including the float levels), I suspected a leak in one of the vacuum lines. > But they seem OK. I checked the advance, both vacuum and mechanical and the > spark advances when speeding up the engine. > > Any suggestions? > > Thanks in advance, You should check your maint. schedule. If you have not had a tune-up in over two years, you should visit a Honda dealership or mechanic that you trust and have them do a tune-up. Tell the mechanic about your specific problems. The mechanic will hook your Civic up to a computerized tester and should be able to determine the source of the problem. |
Re: Civic misses under load
In article <W1_ab.11415$eX1.5022@twister.rdc-kc.rr.com>, "Ed Matarrese"
<ematarrese@wi.rr.com> wrote: > Hi Guys, > > I have an '80 Civic 1300 DX Manual 5-speed with under 50,000 miles. When > driving at a low speed and accelerating, the car starts missing and bucking > badly. I've checked mostly everything imaginable -- so many vacuum lines > and solenoids! Since the carburetor has been rebuilt and adjusted > (including the float levels), I suspected a leak in one of the vacuum lines. > But they seem OK. I checked the advance, both vacuum and mechanical and the > spark advances when speeding up the engine. > > Any suggestions? > > Thanks in advance, You should check your maint. schedule. If you have not had a tune-up in over two years, you should visit a Honda dealership or mechanic that you trust and have them do a tune-up. Tell the mechanic about your specific problems. The mechanic will hook your Civic up to a computerized tester and should be able to determine the source of the problem. |
Re: Civic misses under load
Ed Matarrese wrote:
> > Hi Guys, > > I have an '80 Civic 1300 DX Manual 5-speed with under 50,000 miles. When > driving at a low speed and accelerating, the car starts missing and bucking > badly. I've checked mostly everything imaginable -- so many vacuum lines > and solenoids! Since the carburetor has been rebuilt and adjusted > (including the float levels), I suspected a leak in one of the vacuum lines. > But they seem OK. I checked the advance, both vacuum and mechanical and the > spark advances when speeding up the engine. > > Any suggestions? The recent carburetor work makes me suspicious that there could be a problem with the rebuild. However, assuming (and it's a big assumption) that the carburetor is ok, then I would look into a possible ignition problem. For example, a common problem is with the ignition wires which need to be replaced at about 100,000 mi. Another common problem is that the spark plugs become oil fouled due to leaking cvcc valves (which could cause a misfire under load). Eric |
Re: Civic misses under load
Ed Matarrese wrote:
> > Hi Guys, > > I have an '80 Civic 1300 DX Manual 5-speed with under 50,000 miles. When > driving at a low speed and accelerating, the car starts missing and bucking > badly. I've checked mostly everything imaginable -- so many vacuum lines > and solenoids! Since the carburetor has been rebuilt and adjusted > (including the float levels), I suspected a leak in one of the vacuum lines. > But they seem OK. I checked the advance, both vacuum and mechanical and the > spark advances when speeding up the engine. > > Any suggestions? The recent carburetor work makes me suspicious that there could be a problem with the rebuild. However, assuming (and it's a big assumption) that the carburetor is ok, then I would look into a possible ignition problem. For example, a common problem is with the ignition wires which need to be replaced at about 100,000 mi. Another common problem is that the spark plugs become oil fouled due to leaking cvcc valves (which could cause a misfire under load). Eric |
Re: Civic misses under load
Ed Matarrese wrote:
> > Hi Guys, > > I have an '80 Civic 1300 DX Manual 5-speed with under 50,000 miles. When > driving at a low speed and accelerating, the car starts missing and bucking > badly. I've checked mostly everything imaginable -- so many vacuum lines > and solenoids! Since the carburetor has been rebuilt and adjusted > (including the float levels), I suspected a leak in one of the vacuum lines. > But they seem OK. I checked the advance, both vacuum and mechanical and the > spark advances when speeding up the engine. > > Any suggestions? The recent carburetor work makes me suspicious that there could be a problem with the rebuild. However, assuming (and it's a big assumption) that the carburetor is ok, then I would look into a possible ignition problem. For example, a common problem is with the ignition wires which need to be replaced at about 100,000 mi. Another common problem is that the spark plugs become oil fouled due to leaking cvcc valves (which could cause a misfire under load). Eric |
Re: Civic misses under load
Ed Matarrese,
I'll take this one... I had an '80 Civic 1500 DX Manual 5-speed with 250,000 miles on it and was still running strong, no oil burn, but the sheet metal for the top of the struts rusted away, so before it fell down to the ground I gave it to a buddy and he used the engine and tranny in another one. Anways, Moving on: Too low RPM, Too high of gear selected or lugging, Too low octane, Too advanced ignition, ignition vacuum advance plugged to wrong carb port. Carb too lean: Low fuel level, jets too small, bad accelerator pump, missing hoses... Any of these will cause lean burning thus missing, spitting and bucking ************************************************** *** Off the lean burn subject: Bad plugs, bad ignition wires, bad distributor cap. Any of these will cause missing, spitting and "bucking" Most likely: bad distributor cap. Phil Ed Matarrese wrote: > Hi Guys, > > I have an '80 Civic 1300 DX Manual 5-speed with under 50,000 miles. When > driving at a low speed and accelerating, the car starts missing and bucking > badly. I've checked mostly everything imaginable -- so many vacuum lines > and solenoids! Since the carburetor has been rebuilt and adjusted > (including the float levels), I suspected a leak in one of the vacuum lines. > But they seem OK. I checked the advance, both vacuum and mechanical and the > spark advances when speeding up the engine. > > Any suggestions? > > Thanks in advance, > Ed > > -- > _________________________________________ > > For sports news about the Milwaukee area, visit: > http://home.wi.rr.com/edmat > For news about your golf league, visit: > http://seniorparplusgolf.com |
Re: Civic misses under load
Ed Matarrese,
I'll take this one... I had an '80 Civic 1500 DX Manual 5-speed with 250,000 miles on it and was still running strong, no oil burn, but the sheet metal for the top of the struts rusted away, so before it fell down to the ground I gave it to a buddy and he used the engine and tranny in another one. Anways, Moving on: Too low RPM, Too high of gear selected or lugging, Too low octane, Too advanced ignition, ignition vacuum advance plugged to wrong carb port. Carb too lean: Low fuel level, jets too small, bad accelerator pump, missing hoses... Any of these will cause lean burning thus missing, spitting and bucking ************************************************** *** Off the lean burn subject: Bad plugs, bad ignition wires, bad distributor cap. Any of these will cause missing, spitting and "bucking" Most likely: bad distributor cap. Phil Ed Matarrese wrote: > Hi Guys, > > I have an '80 Civic 1300 DX Manual 5-speed with under 50,000 miles. When > driving at a low speed and accelerating, the car starts missing and bucking > badly. I've checked mostly everything imaginable -- so many vacuum lines > and solenoids! Since the carburetor has been rebuilt and adjusted > (including the float levels), I suspected a leak in one of the vacuum lines. > But they seem OK. I checked the advance, both vacuum and mechanical and the > spark advances when speeding up the engine. > > Any suggestions? > > Thanks in advance, > Ed > > -- > _________________________________________ > > For sports news about the Milwaukee area, visit: > http://home.wi.rr.com/edmat > For news about your golf league, visit: > http://seniorparplusgolf.com |
Re: Civic misses under load
Ed Matarrese,
I'll take this one... I had an '80 Civic 1500 DX Manual 5-speed with 250,000 miles on it and was still running strong, no oil burn, but the sheet metal for the top of the struts rusted away, so before it fell down to the ground I gave it to a buddy and he used the engine and tranny in another one. Anways, Moving on: Too low RPM, Too high of gear selected or lugging, Too low octane, Too advanced ignition, ignition vacuum advance plugged to wrong carb port. Carb too lean: Low fuel level, jets too small, bad accelerator pump, missing hoses... Any of these will cause lean burning thus missing, spitting and bucking ************************************************** *** Off the lean burn subject: Bad plugs, bad ignition wires, bad distributor cap. Any of these will cause missing, spitting and "bucking" Most likely: bad distributor cap. Phil Ed Matarrese wrote: > Hi Guys, > > I have an '80 Civic 1300 DX Manual 5-speed with under 50,000 miles. When > driving at a low speed and accelerating, the car starts missing and bucking > badly. I've checked mostly everything imaginable -- so many vacuum lines > and solenoids! Since the carburetor has been rebuilt and adjusted > (including the float levels), I suspected a leak in one of the vacuum lines. > But they seem OK. I checked the advance, both vacuum and mechanical and the > spark advances when speeding up the engine. > > Any suggestions? > > Thanks in advance, > Ed > > -- > _________________________________________ > > For sports news about the Milwaukee area, visit: > http://home.wi.rr.com/edmat > For news about your golf league, visit: > http://seniorparplusgolf.com |
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