Hello,
I have noticed over the last week that my '67 Duetto would have a bit of hesitation (very slightly) and it went away as quickly as it began.
This week when starting the vehicle, it backfired and after running I could tell I was not running on all 4-cylinders (story of my life, ha). Changed spark plugs and that seemed to work as I the car ran great and I ran her hard to see if the problem would come back.
The car sat for a bit and then I went to go somewhere else, and the car started idle rough (not all cylinders firing). So I cleaned the spark plugs and tried again but the same problem persisted and seemed to have an intermittent no spark or hesitation. Hard to describe.
Here are some specs:
1600 engine with 32 DCOE 27 webers
weber specs:
-venturi: 30
-main jet: 120
-Air corrector: 180
-emulsion tube: f-16
-Idle jet 50F11
-Starting jet: 65f5
Early alfa manifold with a screw in thermostat
AR carb support installed
using Duetto airbox with homemade filter attachment
123 ignition
bosch red coil 222 119 030 and tests good
sparkplug wires test good
running a variety of spark plugs so I can have fresh plugs available.
-LODGE Golden Lodge HL
-Lodge B7ES
-Bosch plugs WR7DC+
This is what I have done:
-checked timing (with cam cover off) and it is good (No 1 point up and not to specified direction)
-check power to coil + side and is 12.6
-check for spark with inline spark tester and all cylinders have spark
-checked compression on warm engine with WOT
1. 170 170 170 165
2. 170 170 160 155
3. 160 160 150 155
4. 170 170 170 160
-replaced 123 distributor with a new one, same problem and changed back to original 123 dizzy and set up as described by 123
-changed cap and rotor
-changed spark plug wires (even though ones I using tested good)
-installed new bosch red coil and test good
-replaced mech fuel pump
-changed fispa fuel filter and cleaned out bowl
-took weber carbs off and cleaned the carbs, jets and replaced gaskets. set-up as described in this post
Ridiculously fast "idle" on weber converted S2... post #13
I DID NOT change the rubber mounts as I am just trying to get the car to my winter warehouse where I can do more work. Mounts look ok but could be changed this winter.
Now the car starts and getting a rough idle, it seems like it is missing and backfiring. It bogs down when given gas.
Any help and guidance would be greatly appreciated as I have no idea what else could be wrong or the issue as I need to move the car in the next few days.
Thank you,
Chip
I have noticed over the last week that my '67 Duetto would have a bit of hesitation (very slightly) and it went away as quickly as it began.
This week when starting the vehicle, it backfired and after running I could tell I was not running on all 4-cylinders (story of my life, ha). Changed spark plugs and that seemed to work as I the car ran great and I ran her hard to see if the problem would come back.
The car sat for a bit and then I went to go somewhere else, and the car started idle rough (not all cylinders firing). So I cleaned the spark plugs and tried again but the same problem persisted and seemed to have an intermittent no spark or hesitation. Hard to describe.
Here are some specs:
1600 engine with 32 DCOE 27 webers
weber specs:
-venturi: 30
-main jet: 120
-Air corrector: 180
-emulsion tube: f-16
-Idle jet 50F11
-Starting jet: 65f5
Early alfa manifold with a screw in thermostat
AR carb support installed
using Duetto airbox with homemade filter attachment
123 ignition
bosch red coil 222 119 030 and tests good
sparkplug wires test good
running a variety of spark plugs so I can have fresh plugs available.
-LODGE Golden Lodge HL
-Lodge B7ES
-Bosch plugs WR7DC+
This is what I have done:
-checked timing (with cam cover off) and it is good (No 1 point up and not to specified direction)
-check power to coil + side and is 12.6
-check for spark with inline spark tester and all cylinders have spark
-checked compression on warm engine with WOT
1. 170 170 170 165
2. 170 170 160 155
3. 160 160 150 155
4. 170 170 170 160
-replaced 123 distributor with a new one, same problem and changed back to original 123 dizzy and set up as described by 123
-changed cap and rotor
-changed spark plug wires (even though ones I using tested good)
-installed new bosch red coil and test good
-replaced mech fuel pump
-changed fispa fuel filter and cleaned out bowl
-took weber carbs off and cleaned the carbs, jets and replaced gaskets. set-up as described in this post
Ridiculously fast "idle" on weber converted S2... post #13
I DID NOT change the rubber mounts as I am just trying to get the car to my winter warehouse where I can do more work. Mounts look ok but could be changed this winter.
Now the car starts and getting a rough idle, it seems like it is missing and backfiring. It bogs down when given gas.
Any help and guidance would be greatly appreciated as I have no idea what else could be wrong or the issue as I need to move the car in the next few days.
Thank you,
Chip