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oil light on after rebuild 
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DSM Regular

Joined: Tue May 12, 2009 2:34 pm
Posts: 26
Post oil light on after rebuild
So I basically did this in-frame rebuild procedure, cleaning out the pistons, honing the cylinders and replacing the worn/stuck piston rings. The compression is good (190-190-195-200), maybe a bit high. It starts up fine, but the low oil light is on and I haven't been able to get it to go off.

Any suggestions? Could be simple, or could be a long diagnosis. There's no oil gauge in this model of the Spyder GS, just the red oil idiot light. I think the pump is working and moving oil but haven't really verified that it's getting up into the head.


Fri May 16, 2014 9:27 am
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Joined: Tue May 22, 2007 6:46 pm
Posts: 2848
Location: La Palma, OC
Post Re: oil light on after rebuild
Maybe a bad sensor for the light but you should get an Oil pressure gauge and hook it up to see what's going on.

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Fri May 16, 2014 12:04 pm
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DSM Regular

Joined: Tue May 12, 2009 2:34 pm
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Post Re: oil light on after rebuild
What I'd really like to do is to make this mod .


Sat May 17, 2014 8:33 pm
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Joined: Sun Dec 12, 2010 8:12 am
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Location: Pomona
Post Re: oil light on after rebuild
you might be able to fit an oil filter housing from a turbo model and not have to worry about drilling and tapping since it already has the ports for an oil pressure gauge.

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-Raul aka Jr.
1996 Eclipse GSX
1992 Eclipse GSX (down at the moment)
2003 Yamaha R6


Fri May 23, 2014 6:05 am
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DSM Regular

Joined: Tue May 12, 2009 2:34 pm
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Post Re: oil light on after rebuild
Well I was thinking of something like that, but I'm not sure if all the holes would line up. Here's a YT video from Jafro about the different oil filter housings for dsms. I believe a 4g64 block is identical to a 4g63 n/t as far as the oil filter holes but I don't know that.

But anyways it's done . The 1/8 NPT threading (by hand) did not go well and I took it to a machine shop and they cut a 1/4 NPT thread. I have now an oil pressure testing gauge, but I think I might have already found the problem. I'll probably know for sure fairly soon what's going on.

Hopefully that fitting won't leak too much when I start it, they said at the machine shop that I would need some type of sealant in there.


Sat May 24, 2014 12:22 pm
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Joined: Tue May 12, 2009 2:34 pm
Posts: 26
Post Re: oil light on after rebuild
The main problem was a badly installed rod bearing on the #1 piston rod, and maybe a lot of contaminants overloading the filter / relief valve. I swapped those two DNJ bearings with two of the original OEM ones I had around. There's been no oil light on now for 100+ miles. I got 14psi oil pressure at idle from the test gauge, though I think that's before the oil filter. The 1/4 NPT hole is leaking a bit. I'll probably seal it up with a hex head pipe plug until I figure out the best way to run a gauge up into the dash.

I was thinking of getting something like this but I saw some reviews that it's flimsy and might not last too long.


Fri Jun 06, 2014 7:05 pm
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Location: Pomona
Post Re: oil light on after rebuild
use some teflon tape aka thread sealer on the fitting

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-Raul aka Jr.
1996 Eclipse GSX
1992 Eclipse GSX (down at the moment)
2003 Yamaha R6


Sat Jun 07, 2014 9:02 am
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