Sounds a little low to me. Check to see if all cylinders measure about the same. ANOTHER ANSWER That would be good for most engines. What you're looking for is any kind of serious fluctuation in the pressure between cylinders. If you're getting 90 psi consistently, you're in good shape.
90-100 lbs.
90 lbs = 40.8 kg
Mine was getting 100. But i dont know how good that is. mines 90
90 to 120 minimum in 3 to 5 revolutions of the motor
~90 lbs/ft. and you should be good.
low compression on 2 cyclenders ALT ANSWER: You have two cylinders swaped on the cap. I did it to mine. Try swaping 1 & 3.
briggs doesn't offer compression ratings for their engines. I will usually pull it 3 to 5 times and look for 90 to 120. anything less is a problem and if it doesn't hold compression there is a problem
It should have 150 PSI per cylinder. If it has a reading of 90 LBS. are less on any given cylinder, Then the engine will idle rough at an idle. / engine miss.You can't have anymore then 15 LBS. difference in any one cylinder.150 LBS per cylinder is a good reading on a fresh are good running engine that's in good shape.You may have only 120,130,140 or 150 LBS. That is your highest reading, And engine will run fine as long as there is no more then a 15 LB. difference in any given cylinder.Hope this answers your question. A 100 or less LBS means the engine is tired / Worn out needs rebuilt.
If your 90 pounds you should be benching 90 pounds, you should be able to bench your own weight An age is typically useful, but 90 lbs. should be the goal (bench your own weight). My cousin is 12 (turning 13 next month) and he weighs 90 lbs, but bench presses 120. I'd say he is very strong for his age and weight but, yeah I'd say 90 lbs. is a good goal to reach.
The definitive way to determine if there is a burned valve or blown head gasket is to run a compression test. Mark the spark plug wires; either a piece of tape with the cylinder number or you can buy wire marker labels... your choice. Remove the spark plugs. Using a compression gauge, start at cylinder 1. Some gauges press into the sparkplug hole, some thread in, either way, make certain that the gauge is being used properly, then have an assistant engage the starter as though you are trying to start the engine. Make certain that the piston in question comes to the top of the compression cycle at least 3 times. Write down the pressure that the gauge reports, then proceed to the next cylinder. Perform the test for all 4 cylinders. If any of the cylinders is incapable of producing pressure that is about the same as the other 3, you PROBABLY have a burned valve. If the pressure in 2 adjacent cylinders is low, you probably have a blown head gasket. Either way, if any cylinder has low compression on the compression test, you will not be able to repair the engine without removing the head. If the compression on all 4 cylinders is reasonably good (close to 90 PSI or more) you probably don't have a burned valve. Good luck.
no coil packs only control spark. more likely cause is head gasket blowed between the two cylinder. your welcome!
A stone is 14 lbs, 90 kilos = 198 lbs 14 stone 2 pound.