My initial diagnosis was using a timing light to discover no spark to #1.
That plug was plugged with oil sludge. Replaced the plug and it is firing,
but still wet with oil when I pull it. Also, this is a sudden development,
not something that has progressed gradually. Could that point to a broken
ring? In which case, wouldnšt the compression be lower?
How do I confirm the need for rings? Leak down test? Other means?
For comparison, in June, 1997 131,000 miles:
Compression, Dry 181 164 174 175
Compression, Wet 205 195 195 195
If I do need rings, Išll have some follow up questions <g>.
On 5/29/05 7:22 PM, "Bob Bruce" <bobbruce@mts.net> wrote:
> A bad VG seal will not let enough oil through to foul a plug
> are you sure the wire and plug are good?
> I would expect to see bad rings
> ...
> Bob
>>
>> ----- Original Message -----
>>
>> The spark plug in cylinder #1 rapidly gets oil fouled. This could also
>> explain 2 very recent incidents of rapid oil loss after highway driving, but
>> no notable loss in short trips.
>>
>> Compression check May, 2005 182,000 miles, Cyl # 1->4
>> Compression, Dry 182 158 158 155
>> Compression, Wet 214 201 198 182
>>
>> The łdry˛ reading for # 1 is suspect as the plug had a nice coating of oil
>> on it; and the wet reading seem quite high.
>>
>> Could this possibly be a valve guide seal problem? What other tests or
>> diagnosis should I do to confirm the problem?
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Received on Sun May 29 20:04:15 2005
