#1
IP: 69.181.27.190
|
|||
|
|||
bubbles around spark plugs
Last night I removed the thermostat housing to so I could remove the thermostat to run vinegar through the cooling system. When i removed the thermostat housing a little water ran down the top of the engine and spark plug wells. When i started the engine to draw the vinegar through the engine I noticed that the water that had collected around the aft three spark plugs began to bubble.
Should I be concerned? Thanks. |
#2
IP: 216.115.121.253
|
||||
|
||||
I've never thought much about the seal of a spark plug much.
But it goes to reason that it would be hard to seal six or seven hundred psi very completely with just a few screw threads and some rust. Maybe all engines leak a little? Look for extreame rust that might have caused pinholes around the plugs. If the threads are fine and the plugs take the torque when tightened, then it should be fine. Russ
__________________
Whiskeyjack a '68 Columbia 36 rebuilt A-4 with 2:1 "Since when is napping doing nothing?" |
#3
IP: 142.68.253.180
|
||||
|
||||
Could it just be boiling? Wouldn't that be among the hottest parts of the engine?
__________________
1974 C&C 27 |
#4
IP: 64.231.125.40
|
||||
|
||||
If all it is(?) - is water that seeped down from the thermostat housing boiling off then I wouldn't be concerned.
However, if it is boiling continuously then that would indicate a leak from the water jacket (lifting eye syndrome?) and would be of concern. |
#5
IP: 69.181.27.190
|
|||
|
|||
thanks for the responses. Just want to be clear that the engine was cold when started and i only ran it long enough to draw in the 4 gallons of vinegar. the head never got a chance to get hot.
|
#6
IP: 207.210.31.104
|
||||
|
||||
plug washers
There is a small washer on the threaded part of the spark-plug. I would think that it is made of a softer material for torquing the plug to the head. Removing and reinstalling the same plug, would compromise the washer's efficiency/integrity, especially if the plug was over-torqued. I would try a new set of plugs and torgue them to spec (35 lbs).or just snug them up, as i do
Cheers Rick |
#7
IP: 71.118.13.238
|
|||
|
|||
Plugs
fullkeel, unless you have water coming up out of the spark-plug holes don't worry!!!!!!
I have run 100's of engines on a dyno and have seen many a little leak around them. You don't really loose anything unless you can feel the "Blast" or really hear it. When the plug seats get old and tired and rusty and pitted they don't really seal well. MOST IMPORTANT DO NOT TRY TO OVER TIGHTEN TO MAKE THE PLUG SEAL, as that will eventually cause more problems or even strip the threads. Dave Neptune |
#8
IP: 64.231.125.40
|
||||
|
||||
Quote:
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Ericson 29: Sooty spark plugs | learking | Troubleshooting | 2 | 03-28-2008 05:23 PM |
How do I "read" my spark plugs? | Unregistered Guest | Ignition System | 2 | 10-17-2007 07:18 PM |
rusting spark plugs | baysailor | General Maintenance | 1 | 09-08-2007 09:14 AM |
Frozen spark plugs | Doug M | Ignition System | 3 | 07-23-2006 11:45 AM |
Which Spark Plugs? | randall | Electrical | 1 | 07-10-2006 08:21 AM |