<div dir="ltr">Plugged up metal fuel return line in the tunnel will force gas into the oil. BTDT! <br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jun 15, 2017 at 1:01 PM, William J <span dir="ltr"><<a href="mailto:catnine09@dslextreme.com" target="_blank">catnine09@dslextreme.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> I would think if you had a leaky injector for gas to get in the oil the intake valve on that cylinder would need to be open since the injectors are right on the heads. I can't say how much fuel would leak out until the syslem pressure dropped low enough.<br>
<br>
The fuel could sit long enough to leak past the rings yet if this were the case on start up you would see a cloud of black smoke out the exhaust from what ever fuel still in that cylinder.<br>
----- Original Message ----- From: "Jim Adney" <<a href="mailto:jadney@vwtype3.org" target="_blank">jadney@vwtype3.org</a>><br>
To: <<a href="mailto:type3@vwtype3.org" target="_blank">type3@vwtype3.org</a>><br>
Sent: Wednesday, June 14, 2017 5:26 AM<span class="im HOEnZb"><br>
Subject: Re: [T3] Injector gas leak into engine oil?<br>
<br>
<br>
</span><div class="HOEnZb"><div class="h5"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On 14 Jun 2017 at 3:40, J. Jonik wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Re/ 71 Std Sqbk: Slight smell of gas but not a wet hose to be found anywhere.<br>
</blockquote>
<br>
Smell of "gas" inside the car is most often due to exhaust getting inside.<br>
Usually this is caused by leaking exhaust connections at the lower heat<br>
exchanger to muffler connection. Is your heater turning off? Does the smell<br>
get worse if you turn the heat on?<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Suspicion is that an injector may be leaking gas into engine oil.<br>
Hard to tell if oil at dipstick smells gassy.<br>
</blockquote>
<br>
There's no way for gas to "leak" directly from an injector into the oil. If the<br>
system is running rich, we can get excess gas that makes it's way down the<br>
cylinder walls and into the gas, but that's generally not the fault of the<br>
injectors.<br>
<br>
Check your gas mileage. If it's bad, much less than 20 mi/gal, then there are<br>
other possibilities: most commonly a worn out voltage regulator. There's a<br>
simple test for that if the gas mileage is bad.<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Any trick to test injectors for possible leakers?<br>
</blockquote>
<br>
Unbolt them from the manifold but leave them connected to the gas lines.<br>
Run the fuel pump for a few minutes and watch for leaks. An occasional drip<br>
is no problem.<br>
<br>
Or you can find a shop to take them to that can clean them. The cleaning<br>
cycle also checks for leaks.<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
And, any way to assure that any replacement injectors (salvaged from long gone cars) are ok? Some oldies have been kept sealed in jars...no drying out.<br>
</blockquote>
<br>
If they've been stored in kerosene they are probably okay. You can always<br>
take them to a shop for cleaning, as above.<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Or should we just change up to New Injectors (from our local VW shop) every five years?<br>
</blockquote>
<br>
That would be expensive and silly. Most of my injectors are still the originals.<br>
Except for the hoses, which can be replaced independently, they don't tend<br>
to wear out.<br>
-- <br>
******************************<wbr>*<br>
Jim Adney, <a href="mailto:jadney@vwtype3.org" target="_blank">jadney@vwtype3.org</a><br>
Madison, Wisconsin, USA<br>
******************************<wbr>*<br>
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