What should the idle speed be on a 914?
914’s in good condition will start up like a champ, but will need one or two light taps on the throttle to get the idle up after it drops a few seconds after starting. By the time you back out of the garage and stop to put the car in first, your idle should be about 1600 to 1800 rpm, as your auxiliary air
Why does my Porsche 914 have a warm start?
This is a well-known design issue with 914’s, “warm start over-enrichment” is what we’ll call it. There’s not too much you can do about it. You may have to use an open throttle to get the car to start, as it’s too rich and needs more air.
What should the idle speed be in a car?
By the time you back out of the garage and stop to put the car in first, your idle should be about 1600 to 1800 rpm, as your auxiliary air regulator (AAR) is open and is providing air that bypasses the throttle plate, keeping the idle high to overcome internal friction while the engine warms up and the oil comes up to temperature.
Can a car with D-Jetronic idle stably?
Getting a car with D-Jetronic to idle stably under varying operating conditions is pretty much the Holy Grail of D-Jetronic tuning. I’ve spent a good 15 years chasing the idle on my car, and I have some tips below that might be helpful.
How to adjust the idle on a Porsche 914?
To adjust the idle on the 1.8L engines, turn the air intake screw shown in Figure 8. Adjust the idle until the engine is running with the 800-900 RPM range. The tachometer with the reading of 820 RPM is shown in Figure 9 .
This is a well-known design issue with 914’s, “warm start over-enrichment” is what we’ll call it. There’s not too much you can do about it. You may have to use an open throttle to get the car to start, as it’s too rich and needs more air.
What should the RPM be on a Porsche 914?
All 914s should be set to 44°-50° for all RPMs. If your angle is not in this range, remove the distributor cap and loosen the screw shown in Figure 1. Move the small set of points outwards to decrease the angle, or inwards to increase the angle.
Where are the timing marks on a Porsche 914?
The timing marks should appear at about 1/2″ to the left of the TDC mark for 1.8L engines, or about 2″ to the left of the TDC mark for the 1.7L and 2.0L engines. If they exist, then great, you probably don’t have to remark them.