control box check
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In trying to track down an intermittent missfire problem, I'm checking the rb340 control box as per the manual.
It says to "run the generator ar 3000rpm"
by this do they mean the generator or the engine at 3000rpm? do i need to do some maths?
and,
can a misadjusted control box even cause a missfire? I'm wondering if it causing the coil to crap out.
merry xmas!
-Jim
It says to "run the generator ar 3000rpm"
by this do they mean the generator or the engine at 3000rpm? do i need to do some maths?
and,
can a misadjusted control box even cause a missfire? I'm wondering if it causing the coil to crap out.
merry xmas!
-Jim
36/6612
1967 S3 Coupe (left the factory in 66)
original rego PPC 8E
original owner B.M. Wetherill ..are you out there?
1967 S3 Coupe (left the factory in 66)
original rego PPC 8E
original owner B.M. Wetherill ..are you out there?
-
dgym - Third Gear
- Posts: 358
- Joined: 05 Apr 2014
Hi,
Never checked the pulley ratio but from memory they seem to be around the same size, so engine speed will be fine. Unlikely a fault in the battery charging system would cause a misfire.
You could eliminate any possible trouble by substituting the feed to the coil + with a separate source/battery, you will need an easy disconnect to stop the engine.
Ron.
Never checked the pulley ratio but from memory they seem to be around the same size, so engine speed will be fine. Unlikely a fault in the battery charging system would cause a misfire.
You could eliminate any possible trouble by substituting the feed to the coil + with a separate source/battery, you will need an easy disconnect to stop the engine.
Ron.
- Craven
- Coveted Fifth Gear
- Posts: 1623
- Joined: 14 Sep 2013
>>Unlikely a fault in the battery charging system would cause a misfire.
Ron.<<<
A fault in the charging system will absolutely cause a misfire when the battery voltage dips too low as the battery slowly discharges. On a car with a mechanical fuel pump you can drive for some time with no generator if you don't use the lights and heat. Eventually the battery will run down and the ignition will fail.
Ron.<<<
A fault in the charging system will absolutely cause a misfire when the battery voltage dips too low as the battery slowly discharges. On a car with a mechanical fuel pump you can drive for some time with no generator if you don't use the lights and heat. Eventually the battery will run down and the ignition will fail.
- Jentwistle3
- Second Gear
- Posts: 101
- Joined: 03 Dec 2011
thanks guys,
the reason for checking the control box is that it's the last item that was changed before the problem arose, which usually ends up being the problem.
the reason for checking the control box is that it's the last item that was changed before the problem arose, which usually ends up being the problem.
36/6612
1967 S3 Coupe (left the factory in 66)
original rego PPC 8E
original owner B.M. Wetherill ..are you out there?
1967 S3 Coupe (left the factory in 66)
original rego PPC 8E
original owner B.M. Wetherill ..are you out there?
-
dgym - Third Gear
- Posts: 358
- Joined: 05 Apr 2014
when a condenser fails, is it intermittent or is it done for good when it's done? or does it overheat then come back to life like a coil can?
36/6612
1967 S3 Coupe (left the factory in 66)
original rego PPC 8E
original owner B.M. Wetherill ..are you out there?
1967 S3 Coupe (left the factory in 66)
original rego PPC 8E
original owner B.M. Wetherill ..are you out there?
-
dgym - Third Gear
- Posts: 358
- Joined: 05 Apr 2014
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