Quote:
Originally Posted by bricktron
i thought my trouble getting up hills was down to the trio of 2.88 diff, manual transmission, and large tires, but an ALDA adjustment may have just made all the difference. the engine now sounds heartier and the car comes off the line a good deal more quickly. i left the screw at 1.5 turns CCW but i think 1 turn might have sufficed.
my question is this: what changed over time to necessitate this supposedly unnecessary adjustment? have the aneroid devices in the ALDA itself sagged out of shape? are my injectors dirty enough to have been impeding fuel delivery? what else could have happened in the engine's first 110,000 miles of service that would necessitate tampering beyond the tamperproof cap?
|
The Metal Capsules/Diaphragms do get stiffer as they get older and can ever crack.
If you have an ALDA that means you have a Turbo. It also could be your Turbo or the Boost Pressure to the ALDA is falling off.
The Fuel Injection Pump is adjusted on a Test Stand and there is an acceptable upper and lower range of Fuel Delivery. You Pump could have come off the Stand set at the lower Range.
Also the Test Stand measurements are all mechanical. There is no Engine to respond to the adjustments.
I have seen on other Turbo Engines where the adjustment on similar Devices needed to be tweaked after the Fuel Injection Pump was on a running Engine.
The last issue is that IPs may be tuned to give a specific Emissions out put; not to make the Car Fast.