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diagnosis

  1. Vacuum gauge and wideband O2 sensor for tuning

    Engine Repair, Diagnostics & Rebuilding
    I've read several threads about engines that don't run as expected and what to do to make them run. Usually the discussions center around cam timing, ignition timing, ignition advance curve and carb jetting. That's a lot of variables to juggle. Shade tree mechanics, myself included, can make...
  2. Brake issue diagnosis

    Alfetta & GTV6 (1972-1986)
    Ok, so I have searched high and low for something that is a fairly definitive in terms of being able to state whether the issue I am encountering is caused by a failed brake master or a failed brake booster. I have gambled on what I have been able to find out and figured it to be a master...
  3. Help! She still won't run!

    Carburetors, Fuel Injection & Air Intake
    77 Alfa Spider (SPICA 2.0L) Sat for 15 years. I have done the following, 1. Fuel filters, pump, and lines are new. Clean fuel tank and fresh gas with a little sea foam treatment. 2. Oil and filter are new. 3. Battery new. 4. Plugs are cleaned and gap correct. (I have good spark, tested) 5. T/A...
  4. Battery basics

    Electrical, Chassis & Lighting
    Hello, Kind of a basic question… I feel pretty good about mechanical stuff but electrical and electronic stuff I find just plain mysterious… So, 73 US spec GTV… :thumbup: My battery doesn't seem to hold a charge anymore.:scared: It's the same battery that was in the car when I bought it 4...
  5. missing on #1 cylinder in '91L

    164 & 168 (1991-1995)
    My kids were driving this '91 164L car for many weeks, then it sat idle for a couple of months in the driveway. When I tried to get it ready for the fall commute, the #1 cylinder showed no power. Wouldn't drive well at all. Pull a plug wire from any other cylinder and there's a readily apparent...
  6. '91 164L bucking on acceleration

    164 & 168 (1991-1995)
    I am an automotive tech that works for an idependent shop in the Dallas area. Usually, I work on high-end German makes (certified on Mercedes). About 6 or 8 weeks ago an exasperated client, new to the area, brought an early production '91 164L to us because it was cutting out/bucking/stumbling...
  7. Fuel Pump Function: one man's opinion

    164 & 168 (1991-1995)
    Symptoms, debugging info, whys and hows from my experience. In pondering the mysteries of the Bosch fuel pump in our 164 cars, I have found some information and come to some conclusions. I hope these will be of some help to others in identifying what and where to fix. The Bosch in-tank fuel...
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