Gensaiken Posted October 28, 2013 Report Share Posted October 28, 2013 So, my 510 had sat for a while and I was having some issues with keeping it running, thought maybe there was crap in the tank, also wanted to check if any rust had built up in the tank (side note: it was my carbs untuned). So I removed the fuel tank sender unit to look around, put it back on in the correct direction. Filled it with some fuel and it read 3/4 of a tank. Drove it for a while and noticed it was still at 3/4 of a tank and finally it felt like it was running out of fuel, sputtering. I opened it up again, checked the position, checked if I had damaged anything and checked the cable. All looked fine. Put it back on filled it with about 5 gallons of fuel and now it reads 1/4 of a tank... I'm pretty sure it should read more than 1/4. I'm at a bit of a loss. It has been working fine for years with out issue. When the car is off it reads empty, when turned on it goes up to 1/4 of a tank and stops. I don't want to blindly replace parts, any ideas on what could be going on? Quote Link to comment
Draker Posted October 28, 2013 Report Share Posted October 28, 2013 Woah, you got the car back on the road again?! That's awesome. I'd run it low on fuel and pull the sender out clean the contacts with some vinegar and toss it back in. Obviously make sure the arm moves freely up and down with little resistance. Quote Link to comment
Gensaiken Posted October 28, 2013 Author Report Share Posted October 28, 2013 Yeah, I tagged it and everything. It always ran alright but its more drivable than it has been a long time. I did run it low and I did check all the contacts and it looked alright, little rusty though. It did move freely. I'll see if I can do the vinegar thing. Quote Link to comment
Draker Posted October 28, 2013 Report Share Posted October 28, 2013 If you have an meter hook it up and measure resistance through the sweep. See if there are any spots where the reading remains the same. Quote Link to comment
Gensaiken Posted October 28, 2013 Author Report Share Posted October 28, 2013 I mainly wanted to be sure that it was an issue with the sending unit and not anything else. I have another sending unit that was working when put away I could always swap in. Might be an easier route to test. Quote Link to comment
datzenmike Posted October 28, 2013 Report Share Posted October 28, 2013 Gensaiken, been a while. Good to see you back. There was a post within the last week or so with someone asking if anyone knew you. If you have a spare I would swap it in and cut to the chase. Quote Link to comment
Gensaiken Posted October 29, 2013 Author Report Share Posted October 29, 2013 Gensaiken, been a while. Good to see you back. There was a post within the last week or so with someone asking if anyone knew you. If you have a spare I would swap it in and cut to the chase. Sorry no one knows me. :ninja: I'll swap out the pump some time soon and see if that solves the issue. Then on to the next thing. :hmm: Quote Link to comment
datzenmike Posted October 29, 2013 Report Share Posted October 29, 2013 Sorry no one knows me. :ninja: . Ahhh got 'cha. Quote Link to comment
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