11-07-2012 02:12 AM
I have same engine(3520C) and same problem with this engine:( short spark plugs life. I can not understand, on the even side of the engine can easily die spark plugs! Seems to have checked everything. Gap plug, voltage transformer, cylinder pressure, the mixture of air / fuel. Replace the spark plug, transformers - result is the same! No errors on the panel or not ET. Typically plugs work 1,000 hours sometimes less.On the EVEN side only! I have excellent fuel gas, no detonation or temp deviation. What can be the problem? ECM or ITSM?
10-30-2012 01:21 PM
I am running the same engine and I have a question about plug life. You say you replace the plugs after 3000hrs do find that the spark plug is at the end of its life? I have two sets that get rotated through at oil changes, one set has 4000hrs and the other at 5000hrs. What are you thoughts?
03-08-2012 12:12 AM
THANKS FOR REPLY.THERE IS NO DEVIATION.OUR CAT G3520C ONLY ONE PROBLEM THAT SUUDEN LOAD DIP OCCURED.I MEAN 300KW/400KW LOAD DROPPED.I WILL BE THANKFUL IF U HELP ME.
02-29-2012 12:23 AM
Try to adjust the extension stud to 22 mm of ignition transformer.
Check your earting system. Connection of earth srtip cable form back of ECM box to engine body.
Are you reuse the failued ignition transformer after 2 or 3 days? if ignition transformer working Ok. Then all old ignition transformers need replacement.
02-28-2012 07:47 AM
Operating range for Ignition Transformer Secondary will be somewhere between 22-90% which corelates to approx 8kV - 32kV. Exact % will vary from site to site. We typically see transformer voltage @ 60% with new 346-5123 plugs and 310-3180 transformers on 20E, running @ 1600kW on Alberta pipeline NG. Don't have nearly as many hours with the prechamber plugs, so your trending information would be valuable. What do you see when new vs. 2000 hours for example? Do you have temperature deviation?
02-28-2012 02:48 AM
THANKS FOR KNOWLEDGE SHARING. WE HAVE ALSO G3520C.CAN U TELL ME MAX ALLOWABLE IGNITION TRANSFORMER SECONDARY VOLTAGE WE USED PRECHAMBER PLUG.OUR GENERATORS DROPPED SUUDEN LOAD 300KW/400KW.WE THINK MAY BE IGNITION TRANSFORMER WEAK.
GENSET NO PLUG HRS ENG HRS
1 1000 39500
2 1000 39100
3 2000 39700
THANKS & REGARDS
02-22-2012 07:51 AM
If Candle sticks are original, they would be my suggestion. Others on the community will hopefully provide more tips. Let us know how you make out.
02-22-2012 07:45 AM
the hours are 45000, load = 1600kw, fuel source = natural gas, we are using J-Type Plug Spark P# 243-4291 (CAT). we clean through sand blasting method and check the gapping through filer gauge.
02-22-2012 06:45 AM
How many hours are on the engine? It may be good idea to inspect the candlestick tubes (308-1380) for corrosion and ignition tracking. We have had success cleaning the contact spring carefully with glass bead, but replacing the tubes may be the best approach. What spark plugs are you using and what methods are you cleanning and gapping @ the 1000 h interval? Fuel source? Load?