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Posted by: hookrah Jul 26 2011, 03:58 PM

My 73 2.0L starts and runs perfect with the exception of an occasional "bump" or a series of "bumps" as I move the throttle slightly either way. It doesn't feel like electrical as it's more of a soft miss. I have checked the hoses, timing adjustments and such. What is weird is that it will sometimes run a long time without a hitch. So I was just wondering if anyone has felt something like this and been able to pin it down.

Posted by: Cupomeat Jul 26 2011, 04:02 PM

Normally if the engine is missing after a bump in the road, it means that your motor mounts were very loose...

Seriously, So it has uneven throttle progression with occasional misses?

Are the misses at the same RPM or throttle position?

Perhaps the MPS is sticking? (If this were an L-Jet, it would be an easy answer).

Good luck!

Posted by: SirAndy Jul 26 2011, 04:02 PM

QUOTE(hookrah @ Jul 26 2011, 02:58 PM)

My 73 2.0L starts and runs perfect with the exception of an occasional "bump" or a series of "bumps" as I move the throttle slightly either way. It doesn't feel like electrical as it's more of a soft miss. I have checked the hoses, timing adjustments and such. What is weird is that it will sometimes run a long time without a hitch. So I was just wondering if anyone has felt something like this and been able to pin it down.

Could be fuel delivery. When was the last time you replaced your fuel filter? Does the bottom of the tank have rust in it? Stock FI or Carbs?

PS:

Posted by: 76-914 Jul 26 2011, 04:24 PM

TPS ?

Posted by: Valy Jul 26 2011, 05:00 PM

Check your front engine mounts.
PIA to replace but that's probably what you'll need to do.
The right mount is a real challenge. You;ll hear people suggesting that you remove the oil filter to get access. I removed the mount support from the engine and think its much easier this way.

Posted by: johannes Jul 27 2011, 12:32 PM

Had this. Was a loose battery connection.

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