Remember that pushing the airflow plate only adds fuel. If the problem is that you are too rich adding fuel doesn't help starting. To lean it out one must pull the plate up (kinda hard) or turn the allen. The problem with doing that is that if the issue is ignition or timing then you have created a second problem. Experience makes these issue a snap but you can easily get yourself ina knot if you add problems.

Sometimes a better plan is to pull the fuel pump relay and crank it a bit to clear it out and then give it a shot of starter fluid. If that doesn't geta reaction, one should look elsewhere.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician