I believe in my case that they were trying to rack up the repair bill. After a 2 to 3 hour, and $200.00 look at the CNG system on my truck, the manager told me they would need 2 more hours to make sure they found all the problems. This is not a F16 fighter jet. In my opinion 2 to 3 hours should be plenty of time for someone who knows what they are doing to find any problems in that system. I took the truck to another shop where they believe they can fix the problem for 900.00 bucks. Dave's auto wanted to charge me close to 500 just to find the problem. They might do good work, but buyer beware.
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