<div dir="ltr"><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">The coil should have a resistance around 3 - 5 ohms Richard. I have had bad ones that still work (poorly) with less than 2 ohms.</div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">M</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, Feb 5, 2026 at 11:02 AM Richard Mayor <<a href="mailto:boyracer466@gmail.com">boyracer466@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">I believe I have just such a weakened pump. New points, clean and supple diaphragm, works fine on bench with no fuel, once working with fuel it slows down and stops. I have adjusted the stroke up and down with always the same result. I always suspected there was something amiss with the coil. How do I test it to confirm that is the issue?<div><br></div><div> <br id="m_-6993079965671064295lineBreakAtBeginningOfSignature"><div dir="ltr">Sent from my iPad</div><div dir="ltr"><br><blockquote type="cite">On Feb 4, 2026, at 7:37 PM, Michael Salter via Healeys <<a href="mailto:healeys@autox.team.net" target="_blank">healeys@autox.team.net</a>> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
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One thing about the SU type of fuel pump which is often misunderstood is what happens to the pump in the event that the inlet becomes blocked. In that situation the low pressure on the inlet side of the diaphragm prevents the armature from rising and the points
from opening. This means that current continues to pass through the coil until sufficient fuel passes into the pump through the blockage to allow the diaphragm to rise and the points to open. This causes the coil to overheat and become weakened. </div>
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If you are trying to rebuild a pump and the "tick, tick" seems rather anemic it is likely that a damaged and weakened coil is very the cause.</div>
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Hopefully this will save people from wasting time in this situation. </div>
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M</div>
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<div id="m_-6993079965671064295divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Healeys <<a href="mailto:healeys-bounces@autox.team.net" target="_blank">healeys-bounces@autox.team.net</a>> on behalf of Al Fuller via Healeys <<a href="mailto:healeys@autox.team.net" target="_blank">healeys@autox.team.net</a>><br>
<b>Sent:</b> Wednesday, February 4, 2026 7:58:09 PM<br>
<b>To:</b> Jean Caron <<a href="mailto:vintage_roadster_restoration@hotmail.com" target="_blank">vintage_roadster_restoration@hotmail.com</a>><br>
<b>Cc:</b> healeys <<a href="mailto:Healeys@autox.team.net" target="_blank">Healeys@autox.team.net</a>><br>
<b>Subject:</b> Re: [Healeys] Fuel pump</font>
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<div>Pulling out the pump and checking on the bench might be in order.</div>
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<div dir="auto">As to the weather, it's just getting to be driving season here in the desert. :) </div>
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<div>________________<br>
Sent from my phone <br>
Best Regards,<br>
Al Fuller</div>
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<div dir="ltr">On Tue, Feb 3, 2026, 3:23 PM Jean Caron <<a href="mailto:vintage_roadster_restoration@hotmail.com" target="_blank">vintage_roadster_restoration@hotmail.com</a>> wrote:<br>
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It is February, take it out and rebuild it.</div>
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Jean</div>
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<span style="font-family:Aptos,Aptos_MSFontService,-apple-system,Roboto,Arial,Helvetica,sans-serif;font-size:12pt">Sent from my Bell Samsung device over Canada’s largest network.</span></div>
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<div id="m_-6993079965671064295x_m_16339394548668146divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Healeys <<a href="mailto:healeys-bounces@autox.team.net" rel="noreferrer" target="_blank">healeys-bounces@autox.team.net</a>>
on behalf of Fred Wescoe <<a href="mailto:fredwescoe@gmail.com" rel="noreferrer" target="_blank">fredwescoe@gmail.com</a>><br>
<b>Sent:</b> Tuesday, February 3, 2026 4:02:17 PM<br>
<b>To:</b> healeys <<a href="mailto:Healeys@autox.team.net" rel="noreferrer" target="_blank">Healeys@autox.team.net</a>><br>
<b>Subject:</b> [Healeys] Fuel pump</font>
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<div dir="ltr">Listers,
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<div>I have the standard SU fuel pump on my 66 BJ8. It was rebuilt several years ago and the car ran with the pump with no problems. </div>
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<div>The car has been sitting for about 8 months now and the pump will not run.</div>
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<div>I have tried smacking the pump with a rubber hammer but no joy. Is there another way to get the pump started without removing it and opening it up?</div>
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<div>As always, thanks in advance for your help.</div>
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<div>Fred</div>
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<div>66 BJ8</div>
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