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Timing problem?

 
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Old 07-15-2014, 01:37 AM
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Timing problem?

Hey again, this is basically a continuation of when my timing belt jumped teeth and dented my valves(didn't want to bump the thread) anyways I just got everything put back together today(new exhaust valves(lapped in),new valve stem seals, re-lapped intake valves, new head gasket) The problem I'm having is that when I start the car it starts right up and idles at 1100rpm(not a big issue to me) the thing is when I step on the gas a bit it will sound fine and then drop as low as 250 rpm and then go back up, After a couple of minutes the idle will drop and stay at 750 but it will sound boggy. I hooked up a timing light and when it has been running for a bit(the 750rpm idle) the timing mark through the view port is almost perfectly lined up(it's about a centimeter above the pointer) but you can see it move backwards a little bit and then forward as the idle changes to where it is almost perfect. I had to adjust the distributor completely forward in order to have it lined up almost perfect but it still sounds boggy. I'm planning to do a valve lash adjustment tomorrow but I doubt that will affect anything. Anyone have any ideas on why it is idling so weirdly?
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Old 07-15-2014, 09:53 AM
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Re: Timing problem?

Sometimes adjusting the valves makes a huge difference. The valves might not open enough which limits the performance of the engine. Might not be getting enough fuel/air mixture FOR combustion. I think the timing pointer should be on the middle line. Should see three lines. Better not be on one single white line. That's top dead center. Don't wanna run on that cause you'll run rich as hell which will run crappy. Pointer? Are you looking at the view port where the engine meets the transmission?

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Old 07-15-2014, 04:32 PM
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Re: Timing problem?

Yeah I'm looking at the transmission view-port, Going to do a valve adjustment as we speak to see if that helps.
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Old 07-15-2014, 06:57 PM
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Re: Timing problem?

Make sure the engine is completely cold before adjusting valve lash.

When adjusting timing, make sure the engine is completely warmed up first, and you also need to jump the service port on the passenger side of the firewall. Both are very important, and your adjustment will be seriously affected if you don't do them both.
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Old 07-15-2014, 09:23 PM
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Re: Timing problem?

check the bundle of grounds for the ignition and injection . im not sure where the group of grounds is on these motors most b series are on the coolant neck . make sure there tight and clean . if these arnt tight the car will idle fine a lot of the time but as soon as you hit the gas it will bog . there is enough of a ground to let it start and idle but bog under and load . check out the grounds it may be that simple ..
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Old 07-15-2014, 10:13 PM
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Re: Timing problem?

Thanks everyone for the replies! I retarded the dizzy fully so I advanced it a little and it's running great for now!
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