pierburg 2E3 diaphragm push rod size

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islandboy
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pierburg 2E3 diaphragm push rod size

Post by islandboy »

Just about to order refurb kit from Brickwerks and they advise to check on the pushrod size as early carb models were different length to later models.

Is there any way of determining the likely push rod size without stripping down the carb ?
1987 DG 1900 petrol plus Yamaha Midnight Star and Yamaha Virago and !979 Vespa P125X

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CJH
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Re: pierburg 2E3 diaphragm push rod size

Post by CJH »

islandboy wrote: Is there any way of determining the likely push rod size without stripping down the carb ?

Yep - take a look at the body of the accelerator pump. Easy to see, underneath the fuel inlet spigot. The Brickworks page for the rebuild kit shows the location, and the difference between the long and short versions.

The longer version is the more common apparently, and I've never seen one with the shorter body. If you measure the body of the pump, the 19mm version has a 29mm body. I expect the body for the 13mm version is 6mm shorter.

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itchyfeet
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Re: pierburg 2E3 diaphragm push rod size

Post by itchyfeet »

they have pics of the different body lengths, you should be able to tell by comparing yours, if in doubt post a pic of yours and we can tell you.

https://www.brickwerks.co.uk/carb-rebui ... g-2e3.html" onclick="window.open(this.href);return false;
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islandboy
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Re: pierburg 2E3 diaphragm push rod size

Post by islandboy »

superb answers ! Many thanks folks.

Knew I'd seen the photos somewhere, spent ages searching the forum and there they were on Brickwerks pages !!
1987 DG 1900 petrol plus Yamaha Midnight Star and Yamaha Virago and !979 Vespa P125X

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itchyfeet
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Re: pierburg 2E3 diaphragm push rod size

Post by itchyfeet »

islandboy wrote:spent ages searching the forum and there they were on Brickwerks pages !!
:lol:
1988 DG WBX LPG Tin Top
1989 DJ digijet WBX Holdsworth Villa 3 Pop Top
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islandboy
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Re: pierburg 2E3 diaphragm push rod size

Post by islandboy »

Made a start on cleaning up the carb. Noticed there was no fuel filter in the inlet pipe. Probably why so much crap was is getting in and rough running.
New one ordered from Brickwerks
1987 DG 1900 petrol plus Yamaha Midnight Star and Yamaha Virago and !979 Vespa P125X

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CJH
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Re: pierburg 2E3 diaphragm push rod size

Post by CJH »

That inlet filter is your last line of defence. The first line should be a filter at the outlet of the tank (like this), which would normally be a finer material and would trap whatever that inlet filter would do, and more. I can't really see that the inlet filter is too important provided the tank outlet filter isn't torn or missing, except maybe if your fuel pump or fuel hoses are old and decaying, in which case you'll have more serious problems.
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islandboy
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Re: pierburg 2E3 diaphragm push rod size

Post by islandboy »

CJH wrote:That inlet filter is your last line of defence. The first line should be a filter at the outlet of the tank (like this), which would normally be a finer material and would trap whatever that inlet filter would do, and more. I can't really see that the inlet filter is too important provided the tank outlet filter isn't torn or missing, except maybe if your fuel pump or fuel hoses are old and decaying, in which case you'll have more serious problems.


Thanks for the tip CJH, I've got replacement tank filter to put on too
1987 DG 1900 petrol plus Yamaha Midnight Star and Yamaha Virago and !979 Vespa P125X

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