Do you plug vacuum advance when setting timing?
At 3000 RPM’s (non-WOT) you can pull vacuum, which would screw up your timing readings depending on what your vacuum advance is doing. So, set your initial timing with no vacuum advance. Set your timing curve (springs/weights/bushings) with no vacuum advance. Then, plug your vacuum advance back in.
What does the vacuum pipe do on a distributor?
That vacuum line operates a mechanical device which moves the internals of the distributor to advance the ignition timing . The harder the engine is asked to work, the more the ignition advances.
What happens if vacuum advance doesn’t work?
Eventually the deterioration will reach the point that the vacuum advance no longer adjusts the timing, causing the vehicle to hesitate when the engine attempts to move the vehicle’s weight. In addition to this lack of power, a vacuum leak can also cause the engine to idle roughly or even stall.
Is vacuum advance necessary?
Plugging your vacuum advance into a direct source will allow it to engage at idle, which is good for a number of reasons. Much like cruise conditions, engines run leaner at idle than they do under load. Again, this means the mixture burns slower and needs an earlier spark to optimize the burn.
Do I need a vacuum advance distributor?
Vacuum advance distributors are best for street vehicles. The vacuum advance feature has NO EFFECT on full-throttle power. They provide no benefit for engines that spend most of their life at high rpm (race engines). A vacuum advance unit can add up to 15 degrees of advance.
What should the timing be on a Toyota 22R?
Set the timing… First Of All Its Not 1 2 8 5 0. Its 12 8 5 0.the 22r With A Carb Should Be Set At 12 Degrees With The Hoses Connected And 0 With Them Plugged,if You Have A 22 Re With The Fuel Injection Then It Should Be Set At 5 With The Check Connector Terminals Grounded.i Hope This Helps TOYOTA & INFINITI DRIVER! First Of All Its Not 1 2 8 5 0.
What was the problem with the Toyota 22RE engine?
There was an internal bulletin for Toyota factory technicians back in the mid 80’s about a similar issue with 22RE engines. The issue was an internal programming problem with the ECU.
Where are the check connector terminals on a Toyota 22R?
I have the 22RE, where are the CHECK CONNECTOR TERMINALS? First set to 0 and get running then you will set it to 5 degrees off top dead center… if you hear ir back fire out of the intake this is 360 out and need to turn the crank around one time back to 0
How do you set base timing on a vacuum advance?
To set the initial base timing, remove BOTH vacuum lines at the vacuum advance on your distributor and cap both lines (golf tees work perfect). With the timing light (and vacuum lines off and capped) pointed at the lower pulley, turn your distributor until the pointer is at the 0 degree mark.