Could GVB pm me, I need more explanation as to what type of testing to do next.

Can someone help me with that? What is the EHA?

Could adjusting the 3mm hex adjuster in the air cleaner help the power issue?

What do I use to check fuel pressure/volume? Special Tools required?

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1989 MERCEDES-BENZ 190E 2.6L GAS/AUTO [LOADED]
1989 MERCEDES-BENZ 190E 2.6L GAS/AUTO [PARTS CAR]**Do you need a part? PM me**
1997 ISUZU TROOPER LIMITED 4X4 [LOADED][/FONT]