| Author |
Message |
broomhandle
Samba Member
Joined: August 04, 2009
Posts: 122
Location: Half Moon Bay, Ca
|
 Posted: Tue Aug 23, 2016 11:18 am Post subject: oil pressure switch, oil explosion. |
 |
|
my 69 is my daily driver, I recently moved and the bug goes up 4 tall hills a day.
about a month ago, i was going up a hill, and oil... and smoke from all the oil... the oil pressure switch came loose. i tighten it up hand tight. it kept coming loose, oil everywhere...
I ordered a new one (not Chinese)... I installed it, hand tight.. it lasted 3 days.. no oil.
going to work... oil out the switch.. bad..... I tighter it up. came loose going home. i stopped 1/2 way.. tighten... when got home. same thing...
notes.***
the block is not cracked.. i looked. i used blue thread lock the 2nd install...
hot block vs cold block tighten?
the hills building up crank pressure?
I need mind help.... I just don't get it....
anybody in the bay? Peninsula? I rely on it for work... |
|
| Back to top |
|
 |
ROCKOROD71
Samba Member
Joined: January 18, 2012
Posts: 2770
Location: Boston, MA
|
| Posted: Tue Aug 23, 2016 11:49 am Post subject: Re: oil pressure switch, oil explosion. |
|
|
The switches are tapered, so at some point someone might have bottomed it out and opened up the boss, you can keep tightening it but eventually it will bottom out and then what? Folks say not to use Teflon tape (plumber's tape) because it will effect the ground, but if you cut a strip thin enough to just get it on half the threads, then you won't have a grounding issue. Might wanna give it a shot, might help. The locktite I don't know would do anygood if the actual boss is now too big.
Spec I believe is hand tight plus a quarter turn.
Yes you are building pressure going up hills, the engine is working harder to maintain speed.
Sometimes cracks in this area cannot be seen with the naked eye, or are at least very hard to see, at least when they begin...
_________________
1971 STD BEETLE- DD-1st car, 1st love. keepin' it stock! 1600DP, Solex 34-3 Mexi Bosch SVDA Dist NOW w/POINTS
1977 WESTY "KrustyKamper" 2L FI
| 79SuperVert wrote: |
30 years from now, the next guy may not want your girlfriend, but he may want your classic car, depending on how nice you were to it. |
| asiab3 wrote: |
Careful guys, a petulant child can grow up to be president these days. |
**winter drivers: no survivors!**rust warrior**#keepbodyshopsbusy** |
|
| Back to top |
|
|
mark tucker
Samba Member
Joined: April 08, 2009
Posts: 23937
Location: SHALIMAR ,FLORIDA
|
| Posted: Tue Aug 23, 2016 1:58 pm Post subject: Re: oil pressure switch, oil explosion. |
|
|
| tighten it.lock tight may also be used. |
|
| Back to top |
|
|
goober
Samba Member
Joined: May 03, 2003
Posts: 1183
|
| Posted: Tue Aug 23, 2016 8:59 pm Post subject: Re: oil pressure switch, oil explosion. |
|
|
I'm a little confused. Are you tightening the switch only finger tight?
I may be wrong, but over the years I think I remember seeing taper thread after-market switches and straight/non-taper switches. I use a taper thread switch (1/8" pipe thread I believe) and tighten very gently with a wrench. I've sparingly used Teflon tape or pipe thread sealant in the past. Both seemed to work fine.
When using Teflon tape, if I did have a grounding problem (light off continuously) I was going to ground the switch outer with a separate wire. |
|
| Back to top |
|
|
|
