Hilton

First task on all 928 purchases should be to replace the fuel lines. That'll dramatically reduce the risk of fire. Then make sure the ignition is good on both banks and all cylinders, so no unburnt fuel is getting into the cats.

As to the alignment - put simply, if you lift the car off the ground, the alignment goes out temporarily.

It takes between 10 and 100 miles for the suspension to settle back to its correct place, which is why people say if you've having an alignment done, do not lift the car by the frame, as the alignment will be wrong once the car settles (reports vary, my own experience was approx 60 miles when I bothered to measure).

Welcome to the tank!

Hilton

Hi Ron,

As a follow-up and repsonse to your PM, I'll answer about testing the ignition here, for the benefit of others.

The first three checks to make sure the ignition is working ok should be:

1. In the dark, open the hood and with the engine running, have a look at the plug wires to check for "fire-flies" (small sparks arcing from the plug wires onto other components or the body). If you see any, then its an indication your plug wires need replacing, as their insulation is cracked, causing loss of spark, or weak spark, on any affected cylinders. You can buy a cheap OEM set of wires excluding the plug ends (the spark plug boot and dist. cap end unscrew off the wires and can be re-used).

2. Pull the spark plugs just after running the engine, and see if any are wet. A wet plug indicates that cylinder isn't burning fuel and is pumping it through into the cats. While the plugs are out, use a feeler gauge to check the gap - should be around 0.8mm (from memory - check the workshop manual for spec). If the spark plugs look worn, replace with Bosch WR7DC (single electrode copper plug - dirt cheap, and what the 928 had from factory - tends to provide better spark than platinum etc. plugs)

3. Unplug the plug wires and HT lead (coil to dist. cap), and unscrew the distributor caps. Pull them off and look at the four contacts inside them, and also contacts on the distributor rotors, to check for excessive pitting, corrosion and wear. If they're bad, replace the caps and rotors.

If all three tests are ok, then great, all is good, and your car will be behaving nicely If there's an issue, then fixing it will make the car run smoother, and faster

Have fun - these cars are great to drive, and satisfying to work on

rse

Hilton,
The ignition test simplified explanation is awesome. I can follow it clearly. And I already know another 928er that has a hard time following posts which are shared among more mechanically advanced members.
I cant wait to do my first 928 diagnosis . And I'm anxious to take my new 928 for a ride without damaging it.
Thanks!