Cat 3406b problems - Diesel Truck Forum -
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post #1 of 3 (permalink) Old 02-19-2018, 05:14 AM Thread Starter
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Cat 3406b problems

Have a 90 some vintage 3406b from a wrecked truck that was used as stationary engine that ran a generator for grant work. Bought the engine when work was done, running fine at the time. Sat for 7-8 years and then dropped into a freightliner with a dusted engine. It only starts on ether and runs weak with no snap, will probably run to full throttle but no crack like another very powerful one that we have. It will not idle, once the speed drops below 800 rpm the engine dies no matter what you do with the throttle. Then need ether even when warm. Have tried 2 lift pumps and only have about 20psi fuel pressure but should start on that. Have checked the diaphragm in the adps?. Any help appreciated
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post #2 of 3 (permalink) Old 02-20-2018, 09:58 AM
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Nozzles fouled with crap from sitting . Same with barrels and plungers. Likely fouled with old fuel. Also, depending on what style timing advance it has, the seals/orings may be leaking? Welcome. You might try posting this in the heavy duty forum.

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post #3 of 3 (permalink) Old 02-20-2018, 12:35 PM Thread Starter
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Thank you for the advice, new at this I do see the forums now. Took truck to local shop so will see if he can work on cleaning this up. You're right that it appears to be an issue from sitting. Thanks
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