710wagon Posted August 21, 2021 Report Share Posted August 21, 2021 I am looking for the best mechanical fuel pump for my 710 with an L20b motor. I have gone through 3 of them from auto part stores locally in less than a month. Looking at converting to an electronic fuel pump down the road so any suggestions in one or complications in installing one are also appreciated. Thanks. Quote Link to comment
datzenmike Posted August 21, 2021 Report Share Posted August 21, 2021 Get one from Nissan parts or a want ad in classifieds for a used original one. It's common to forget or lose the 1/4' thick black plastic spacer between pump and the head. Pump, gasket, spacer, gasket, head. Has to be there. Quote Link to comment
710wagon Posted August 21, 2021 Author Report Share Posted August 21, 2021 (edited) 1 hour ago, datzenmike said: Get one from Nissan parts or a want ad in classifieds for a used original one. It's common to forget or lose the 1/4' thick black plastic spacer between pump and the head. Pump, gasket, spacer, gasket, head. Has to be there. I did not know there was supposed to be a spacer there. I’ve never had one since I’ve owned the car for 4 years. Is that a part that Nissan carries or is it something that lame hard to come by. I have always been running just the gasket between the header and fuel pump. that makes sense that the pumps come with 2 gaskets. if you have a photo Id appreciate it. Edited August 21, 2021 by 710wagon Quote Link to comment
datzenmike Posted August 21, 2021 Report Share Posted August 21, 2021 Use the gasket and cut one out of... anything plastic, aluminum... whatever. It's very close to 1/4" and without it the pump sits too far into the engine. Quote Link to comment
bilzbobaggins Posted August 21, 2021 Report Share Posted August 21, 2021 (edited) rock has or had the spacers. They also have or had the nikki style pumps. EDIT I checked, they be still showing available Edited August 21, 2021 by bilzbobaggins Quote Link to comment
datzenmike Posted August 21, 2021 Report Share Posted August 21, 2021 My 710 came to me with an after market pump on it. I detest them for their looks. In the back of the wagon were some used parts, spark plugs etc. and the stock mechanical pump. I put it back on..... that was 10 years ago. Shake my head. Owners have a fuel delivery problem (maybe) so instead of solving using the clues provided if you just look, their first reaction is to put on a new pump..... which obviously wasn't the problem. Same with ignition, just buy a new $50 or more likely they are too cheap so they replace a superior Nissan part with a piece of shit $20 coil and it doesn't help. Starter or alternators are worse because they turn in the casting and there's no going back to the original. Replacing perfectly good original parts with crap gets expensive. Go to casino if taking a chance! Christ on crutches never throw away old parts. 1 Quote Link to comment
d.p Posted August 22, 2021 Report Share Posted August 22, 2021 I am on my second airtex (first broke and left me stranded) but bought a nikki to replace that second airtex when I get around to it. Speaking of which which is the inlet on the Nikki? The one with the arrow above it? Quote Link to comment
banzai510(hainz) Posted August 23, 2021 Report Share Posted August 23, 2021 (edited) 23 hours ago, d.p said: inlet on the Nikki? put your mouth or thumb on it and pump it will be obvious which one sucks in. the pump will bolt to the head but there is plastic/Fonolic spacer.. some come with the pumps also(aftermarket) I havent seen the dealer ones come with spacers. Nikki Koyosan are the best pumps if they even still out there I have run the Mexican made Stone Brand or whatever with the Gold cap tops but swap them out the the orininal nes when I get them. keep the mexican ones in truck under seat as a spare Edited August 23, 2021 by banzai510(hainz) 1 Quote Link to comment
710wagon Posted August 25, 2021 Author Report Share Posted August 25, 2021 got one from rock auto and a new pump just in case. Ill see how that goes today. Thanks for the info and help Quote Link to comment
MTBiker_Boy Posted March 25, 2022 Report Share Posted March 25, 2022 I’m assuming that one worked, right? I had another shitty one die on me. Quote Link to comment
gh0stwerx76 Posted March 31, 2022 Report Share Posted March 31, 2022 Is an electric pump option less reliable? Quote Link to comment
datzenmike Posted March 31, 2022 Report Share Posted March 31, 2022 The mechanical pumps last the life of the engine. As long as they are an original Nissan Hitachi and not some $20 over the counter POS from Taiwan. Same with electric pumps, the 720 truck used them and they last a long long time, but they have to be original equipment part. Quote Link to comment
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