Quote:
Originally Posted by Clavurion
Most likely air leak causing too lean mixture. DME is trying to give richer mixture according to lambda signal but not able to do it.
Typical air leak causes:
*Rubber boots between MAF and throttle valve
*CCV hoses/separator
*Rubber plugs at the rear end of intake manifold
*DISA valve
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The boot that attaches to the throttle body has been replaced.
New CCV system.
Replaced the O Ring on the DISA Valve and cleaned it thoroughly.
So I'll check the rubber plugs at the back of the intake manifold. Hopefully it's as simple as that lol.
If there's any other common vac leaks you can think of I'm happy to check those too!