|
+1 for air leaks as first check. It sounds like a leaness, but may not be due to WUR pressures (you will know after those checks). But air leaks are more or less constant - cracked hose etc, can only let so much unmetered air in. As you go up the throttle range and pump more fuel in, the air leak diminishes in significance. So the greatest effect is at idle. It is a higher proportion of the air flow into the engine.
Some of the hoses can be hard to get to with the engine in the car (cross your finger). Don't forget to check/spray around the base of the injectors - the O rings are a good place for leaks when old.
Alan
__________________
83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-)
Last edited by Alan L; 05-11-2024 at 04:10 PM..
|