i have a 1966 520 , it recently started hesitating/ jerking
like its not getting enough gas. it will jerk at low and high speeds
i already replaced the fuel filters
has anyone had similar issues?
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Posted 08 September 2016 - 05:57 PM
Spark or fuel.
Next time it's acting up get the clutch in and the key off ASAP and carefully pull over. Check the window on the front of the carb. If full of gas it at least getting it delivered. For now, assume that it's not the gas
Check the points. Are they worn or burnt, pitted? File them or replace and set the gap 0.018-0.022". Look for loose connections on the wires to them and on the coil and ballast resistor. Now inspect the distributor cap inside for dampness. Look for wear or corrosion on the terminals inside. Inspect the rotor while the cap is off. Now look at the plug wires and last the spark plugs. If in doubt replace them with new ones. Electricity will ALWAYS look for the easiest path to ground. So you want a well insulated ignition system where the easiest path to ground is through the spark plug! If replacing the plugs use only NGK brand.
This will solve most running problems, if not, we'll look deeper into the carburetor.
Posted 09 September 2016 - 08:55 AM
Has the truck just come out of a long slumber? Or do you use it regularly?
Could be a fouled distributor cap or bad wires. Does it backfire?
Posted 19 October 2016 - 12:56 PM
im starting to lean towards the carb on this issue
fuel is getting delivered and the ignition system looks to be okay
Posted 19 October 2016 - 03:29 PM
Ignition is easy... got spark or not. Assume you saw sparks?
OK then, this is all good information and points toward the cause. Fuel to the carburetor and spark to the plugs. It would appear that the carb is not properly mixing the fuel with the air.
Could be the primary jet is part plugged, sediment or water.
Posted 20 October 2016 - 06:11 AM
ck for distributor bushing wear and condenser if still have points.
I would cut out above idle to find my condenser was bad, but now have a Pertronix ignition
Posted 20 October 2016 - 10:18 AM
1969 Patrol L60
1965 Patrol L60 (parts provider)
1990 300ZX (sold 10/13)
Posted 20 October 2016 - 11:37 AM
Idle mixture adjusts.... idle. Anything above idle is the slow speed circuit and the primary.
Posted 14 December 2016 - 12:41 PM
Posted 14 December 2016 - 03:20 PM
Posted 14 December 2016 - 04:33 PM
Does the Nikki have 3 or 4 screws holding the front float glass on?