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  1. Plugs and wires are in good shape. However, just...

    Plugs and wires are in good shape. However, just to be sure, I put brand new NGK plug wires and NGK B7ES plugs in today. No difference. The NGK B7ES plugs are a step cooler than the NGK6ES that I had...
  2. Since I'm still running the stock coil that is...

    Since I'm still running the stock coil that is rated at 1.5 Ohms, I believe that I'm supposed to run the resister which also is rated at 1.5 Ohms. This gives a total of 3 Ohms on the ignition...
  3. I am familiar with that thread. I don't believe...

    I am familiar with that thread. I don't believe that I have the same situation since replacing the Pertronix unit with points makes no difference. It really comes down to jumpering the ballast...
  4. Have to jumper ballast resister for car to rev past 4.5 K RMP

    Hi all,

    After a long trouble-shooting session (literally over a year...) I've determined that the high rpm (4.5 K + ) hesitation issue I've had is ignition based (weak spark or too much...
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    Hi all, The longer test drive confirmed that...

    Hi all,

    The longer test drive confirmed that the 4500 rpm + hesitation was mostly gone with the ballast jumpered. There was still a little flat spot in the power range but it was much less...
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    OMG! I might be onto something!

    Hi all,

    Did two things this morning.

    First pulled the spark plugs and gapped theme to .34 (they were all at .31 ~).

    Then I jumpered the ballast resister. I'm running the Pertronix...
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    Hi beermanpete, Ok, I think we can rule out...

    Hi beermanpete,

    Ok, I think we can rule out the fuel pump of fuel pressure. I hooked up he fuel pressure gauge as you suggested by taping it to the outside windshield while I drove around. Fuel...
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    Hi beermanpete, Yes, the engine was running...

    Hi beermanpete,

    Yes, the engine was running at 1000 rpm. I actually ran another test today and put an external tach on the engine. With the rpms reading ~1100 rpm on both the inside and external...
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    Some more fuel pressure data

    Hi all,

    Just for comparison, I put the old fuel pump on and got the following readings;

    Front= 2-3 fluctuating psi Rear= 3.1-3.4 fluctuating psi Note: both would stabilize by...
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    Ok, Ok, I measured the fuel rate and pressure. FSM wrong?

    Hi all,

    For all you imploring me to measure the fuel flow rate and pressure, you'll be happy to know that mission is accomplished. Now, I'm not sure how accurate the measurements are. Here's...
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    Hi Blue, I pinched off the fuel return line...

    Hi Blue,

    I pinched off the fuel return line for about a minute and noticed no difference in how the engine was running at idle. What should I be looking for?

    I did pull off the rubber hose...
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    Hi, I know some people have reported issues...

    Hi,

    I know some people have reported issues with the Pertronix, but I've ruled that out in that I get the same symptoms even when I run points.
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    Hi Steve, Yes, the float inlets appear to...

    Hi Steve,

    Yes, the float inlets appear to work fine.
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    Hi all, Still at this.... At this...

    Hi all,

    Still at this....

    At this point, I've gotten very good with adjusting the float level bowels. I do not believe the issue has to do with a low fuel level in the bowls. Nor is it the...
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    '72 SU Float Level

    Hi all,

    I'm still dealing with a high rpm issue, but I'll leave that to another thread.

    What I would like to know is the float level for 1972 carbs; I hear that they are not the same front...
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    I should add that the other way I was trying to...

    I should add that the other way I was trying to adjust the floats was by the using 1/2" drill bit as a yard-stick for the distance between the float lid and he float top. However, I'm not entirely...
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    Hi all, I don't have a fuel pressure gauge,...

    Hi all,

    I don't have a fuel pressure gauge, so I decided to pick up new fuel pump. Figured the worse case scenario is I'd end up with a spare fuel pump. I now have a spare fuel pump. Made no...
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    Hi Steve, I appreciate that. I'll...

    Hi Steve,

    I appreciate that.

    I'll probably attack the floats this weekend. Life's too hectic for me to do much on this issue until the weekend.

    Thank you for all your suggestions.
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    Hi Steve, Well, I didn't realize I was...

    Hi Steve,

    Well, I didn't realize I was whining. Sorry if my lack of confidence with the floats annoys you.

    I did check the total advance and it goes well beyond the degree markers; so I'm...
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    Hi Blue, The hesitation occurs at 4k RPM and...

    Hi Blue,

    The hesitation occurs at 4k RPM and above to red-line. Power does not return at some point above 4.5 K RPM. So if by transitional, you mean the that power comes back at say, 6 K RPM,...
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    Hi all, So I removed the Pertronixs and put...

    Hi all,

    So I removed the Pertronixs and put points back on. As I expected no change in performance; 4K + RPM hesitation still exists.

    One thing I did notice is that with the points and...
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    Hi all, This is driving me nuts! BTW, I...

    Hi all,

    This is driving me nuts!

    BTW, I should have listened to Bruce and left the floats alone. I messed with them and really had a hard time getting the level back to where they should...
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    Yeah, I'm thinking that it's a long shot....

    Yeah, I'm thinking that it's a long shot. Actually, I think I tried switching to points some time ago, and the hesitation remained. It's a fairly easy swap though, so I might try it.

    The more I...
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    So, I can't tell for sure if the mechanical...

    So, I can't tell for sure if the mechanical weights move freely. I tried to remove the breaker plate from the distributor but one of the screws doesn't want to let loose and I'm afraid of mashing the...
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    Just to add; if I slowly accelerate up to 4.5K...

    Just to add; if I slowly accelerate up to 4.5K RPM and beyond, the hesitation does not occur

    Interesting idea on the distributor, I'll look into that.

    Thanks for the replies so far folks!
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