 Carbs or Ing Sys, Intermittent miss-fire |
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| Razorbobsr |
 Mar 14 2011, 11:26 AM
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#1
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Member  Group: Members Posts: 282 Joined: 6-June 10 From: Terre Haute Ind Member No.: 11,813 Region Association: Upper MidWest  |
As you guys said, cleaned jets in carb, replaced plugs and wires, smooth at 900 rpms in drive, smooth at 2/3/4 K rpms in driveway, pulls hard W/O, sill I have a miss-fire that I can feel coming and going[surging, sound of engine when all 4 hit at proper times] Could I have a coil prob? Or where off to next?? 2L/carbs/5K sense rebuild/1500 miles driven to get this car home..... NKG plugs but do have Bosh plugs waiting...... Getting warmer outside, Help! Bob PS, British car friends are starting to make fun of the 914........... AND ME
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| VaccaRabite |
Mar 16 2011, 09:30 AM
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#2
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En Garde! Group: Admin Posts: 13,756 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region 
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Always adjust carbs when they are fully warmed up. Adjusting them while cold will make them run fast when warm.
On the mix screw Turning in closes the the jet (less fuel and air) Turning out opens the jet (more fuel and air) the mix screw does not change the ratio of air to fuel, just the volume of it. The object of adjusting this screw is to get the cylinder to run smoothly on as little fuel and air as possible. Turning the idle screw changes the idle speed for that bank of carbs. You disconnect the bar by unbolting the drop links that go from the cross bar to the carb body. They are usually held on with small bolts (m4 or m5). Depending on the make of the bar, some have snap joints instead of bolts. Take a picture of your connection and we can help you out. Also, try to be a little more clear when you post. It may just be me, but I have a hard time understanding what you are trying due to your posting style. Zach |
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| Razorbobsr |
Mar 16 2011, 02:42 PM
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#3
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Member Group: Members Posts: 282 Joined: 6-June 10 From: Terre Haute Ind Member No.: 11,813 Region Association: Upper MidWest |
QUOTE(Vacca Rabite @ Mar 16 2011, 11:30 AM)  Always adjust carbs when they are fully warmed up. Adjusting them while cold will make them run fast when warm. On the mix screw Turning in closes the the jet (less fuel and air) Turning out opens the jet (more fuel and air) the mix screw does not change the ratio of air to fuel, just the volume of it. The object of adjusting this screw is to get the cylinder to run smoothly on as little fuel and air as possible. Turning the idle screw changes the idle speed for that bank of carbs. You disconnect the bar by unbolting the drop links that go from the cross bar to the carb body. They are usually held on with small bolts (m4 or m5). Depending on the make of the bar, some have snap joints instead of bolts. Take a picture of your connection and we can help you out. Also, try to be a little more clear when you post. It may just be me, but I have a hard time understanding what you are trying due to your posting style. Zach Could be my lack of formal education?? Or the British sports car guys dumbed me down?? Or just natural? Will try to do better! Cleaned D/cap with carb cleaner, buffed rotor and cleaned, backed idle on carbs all the off, in till I picked up a hair of RPMs then backed off 1/2 hair. Backfires much more muffeled now, poom V BANG Better............ AA guys tell me I have TOO open exhaust sys and need more back pressure, cherry bomb muffler just about stright through...... Correct?? Bob |
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Posts in this topic
Razorbobsr Carbs or Ing Sys Mar 14 2011, 11:26 AM
Vacca Rabite Where in the rpm range is it missing? Is it missi... Mar 14 2011, 04:10 PM
Razorbobsr
Where in the rpm range is it missing? Is it miss... Mar 14 2011, 04:58 PM Vacca Rabite Can you get it to miss sitting in your driveway? ... Mar 14 2011, 07:31 PM Razorbobsr
Can you get it to miss sitting in your driveway? ... Mar 14 2011, 09:04 PM Vacca Rabite Coils usually either work or don't work. I... Mar 15 2011, 08:04 AM Razorbobsr
Coils usually either work or don't work. I... Mar 15 2011, 10:34 AM Razorbobsr
Coils usually either work or don't work. I... Mar 16 2011, 08:57 AM indianmort if the misfire develops after the car has warmed u... Mar 15 2011, 08:23 AM Razorbobsr
if the misfire develops after the car has warmed ... Mar 15 2011, 11:39 AM Borderline How did you synch the carbs/linkage? I have found... Mar 15 2011, 10:24 AM Razorbobsr
How did you synch the carbs/linkage? I have foun... Mar 15 2011, 11:36 AM McMark 009 Dizzy is garbage. As Dave Darling loves to sa... Mar 15 2011, 11:42 AM Razorbobsr
009 Dizzy is garbage. As Dave Darling loves to s... Mar 15 2011, 01:37 PM McMark Normally I retype all this info. But there is so ... Mar 15 2011, 02:33 PM Razorbobsr
Normally I retype all this info. But there is so... Mar 16 2011, 06:18 AM McMark
Zach, you're confusing two screws here. The ... Mar 16 2011, 11:24 AM Vacca Rabite
Zach, you're confusing two screws here. The... Mar 16 2011, 07:34 PM |
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