----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- Jimi/Peter,
I didn't see the earlier posting about oil pressure, but I offer these thouhgts.. If no oil presssure on starting after sitting for a long period, the oil may have drained from the oil pump, and the pump lost its prime. I think this can happen this way. Maybe a quart or so low in the tank. A very tight oil cap. A stopped up crankcase vent. Now when stopping the hot engine, as the crankcase cools, a slight vacuum is formed as the air space above the oil level cools and contracts...sucking oil from the oil pump. This can only happen when the oil pump cover to gears clearance is too large, allowing the oil to flow by the gears, back into the oil sump....Now, when the engine is started, the pump is empty of oil, not primed, and may take 20-30 seconds before the oil is sucked into the pump and generates pressure. This is a fairly common problem with these old engines. As the gears wear the cover, and case, the clearance becomes too great for the oil to stay in the pump..... especially if the engine is left sitting for a long period..and may be more likely if using thin oils. I have seen this happen, but thankfully not in my engine. The repair if it happens too often is to remove the accessory case, and rebuild the oil pump cavity, or replace the accessory case.....both fairly expensive, but necessary. That's why the Continental Overhaul Manual ; Section VII, Operating Instructions (Page 28) says: " As soon as Engine starts, adjust the throttle to obtain approximately 800 RPM, and observe the following precautions: (a) "Watch the oil pressure guage closely. If no oil pressure is indicated in 30 seconds stop the engine, and determine the cause". Etc., Etc.. Hope this helps understand that an oil pressure problem can result, after letting the engine sit for a long period; but MAY NOT be of serious nature if the engine is operated on a regular basis and the hot oil pressure is not below 10 psi at Idle... Harry ==^================================================================ EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Sid.bAhN69 Or send an email To: [EMAIL PROTECTED] This email was sent to: [EMAIL PROTECTED] T O P I C A -- Register now to manage your mail! http://www.topica.com/partner/tag02/register ==^================================================================
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