New motor build problems

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New motor build problems

Post by PeeWeeMan91 on Tue May 08, 2012 8:17 am

Dad got the motor all back together and after some wrong connected hoses lol
My bad I got it running after several start ups then runs and cool downs I drove down to McDonough and when coming to a stop the oil light would flicker and try to stall out any ideas. Its not spewing oil just one drip for
The push rod tube area. But now I can't get the light to flicker. And it runs fine.
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Re: New motor build problems

Post by vw57drvr on Tue May 08, 2012 8:47 am

According to VW, the light can flicker and be normal. Sounds like it may be heating up a little causing the stall, or the carb is junk.
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Re: New motor build problems

Post by Bugman114 on Tue May 08, 2012 9:48 am

what size motor, 1600? all the tin in place? u have thermo or flaps? belt nice and tight? my 40 horse was doin the same thing with the oil light, till i replaced the old dry rotted belt it came with (prolly older then me Laughing ). if there was ever any oil, or other various liquids on it, it will cause the fan to slip. i always just bought a bunch of cheap belts, as they never lasted more then a few months due to the random various oil leaks i had, lol.
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Re: New motor build problems

Post by rpm750 on Tue May 08, 2012 11:15 am

Flickering light indicates low oil pressure. I think when they get hot the pressure will drop due to the oil being thin at that point. How are you determining if it's hot? Some days I can't even hold the dip stick it's so hot, not sure what the oil temp is but around 220 on some days would be a little high but a safe temp. 180 is concidered operating temp. I have a meat thermometer that I stick in the dip stick tube, remove the dip stick of course. WalMart 6-7 bucs, had to straighten the probe out.

Something like this..... It will give ya an idea of whats going on.
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Re: New motor build problems

Post by PeeWeeMan91 on Tue May 08, 2012 11:54 am

I don't know if it's getting hot it's just flickering and normally when it gets hot I can tell a difference in power and I don't notice any lack in performance.
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Re: New motor build problems

Post by Bugman114 on Tue May 08, 2012 1:33 pm

might wanna also check the oil pressure pistons. they should fall out of the case the second u remove the big fat screws, or at most a light tap of your finger should make them fall out. i use an impact screwdriver (the one u hit with a hammer) to remove the big fat screws. most FLAPS carries them for like $20 - $30.

also check to make sure the throttle shaft in the carb isn't worn out. if so it essentially creates a vacuum leak, thus making u run too lean.

and i'm guessing you've already checked the obvious, like timing, valves, etc.
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Re: New motor build problems

Post by ASBug on Tue May 08, 2012 1:45 pm

What oil are you running?
5W30? LOL.
Shoould be 20W50...
Just saying..
KC
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Re: New motor build problems

Post by fluxcap on Tue May 08, 2012 1:48 pm

I figure you were probably hanging out the window taking pics and your hat blew off, got sucked through your decklid vents, and clogged your fan shroud. This caused the temps to increase and your oil light to flicker. Eventually, the fan must have tore your hat to shreds and air flow was restored to normal, which is why the light stopped flickering. Razz

But seriously, is it still flickering??? Up top you said it wasn't flickering anymore, but after Bob's post you said it was flickering. If it has indeed stopped flickering and is running better, I'd just keep an eye on the temps and go with it.

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Re: New motor build problems

Post by camch on Tue May 08, 2012 3:52 pm

Is this a rebuilt motor? If so what are the bearing tolerance the problem might be to thick or to thin of oil if its been rebuilt.
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Re: New motor build problems

Post by PeeWeeMan91 on Tue May 08, 2012 5:32 pm

ASBug wrote:What oil are you running?
5W30? LOL.
Shoould be 20W50...
Just saying..
KC


Brad penn 20w 50
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Re: New motor build problems

Post by PeeWeeMan91 on Tue May 08, 2012 5:37 pm

Rebuilt heads and upgraded pistons 86.95
And no it is not flickering anymore but now I've got to get a new hat!
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Re: New motor build problems

Post by Bugman114 on Tue May 08, 2012 6:35 pm

if u have new bearings, a straight crank and tight tolerences, there's no need to run suck thick oil, unless you wanna bypass your oil cooler 100% of the time, lol. which can cause your oil to get to hot, which doesn't nessecarily mean your motor (heads) are overheating tho.

but if your getting low oil pressure, that may indicate another issue. have u tried putting a gauge to see what your actuall pressure is?
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Re: New motor build problems

Post by bumblebuggy on Tue May 08, 2012 7:18 pm

Bugman114 wrote:there's no need to run suck thick oil
I've been running 20-50 for over 15 years with no issues in all my VWs and I haven't had a motor grenade on me yet.


Let me go find some wood to knock on now. Very Happy
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Re: New motor build problems

Post by rpm750 on Tue May 08, 2012 10:09 pm

But Glenn at 58 mph you're only turning the engine 3k. LOL

Just sayin Bro.....
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Re: New motor build problems

Post by buggin70 on Tue May 08, 2012 10:49 pm

i just changed my oil and my engine started doing this too. idk what it is, it will stay on when its warmed up but will go away when i press the gas soooooo idk haha
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Re: New motor build problems

Post by vw57drvr on Thu May 10, 2012 7:06 pm

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