no start after a cross jump start
Hi.. i did a oil change (10w-30, its what the oil cap says) last week and drove home, but after that did not use the car for a week. So yesterday when I try to start it, it didn't (not cranking properly). It should be the battery because it is freezing out side. So I jumped the car and my friend accidentally cross the connections. But didn't crank bcoz there where no response from the car (even when I try to crank it). Then I realized it crossed and fixed it and used proper connections. However, at that time the car wont start. It crank normally but not firing, it sounds like it try'* and I can hear POP sound (like a blow by ignition, but not ignition or firing a cylinder). But does not start.
Then I charge the battery and tried it again. Same result.So i tryed for couple of time and left it.
When I try to start it today (after 24hrs) The battery is not enough (it shows 10V). But doesn't crank. However the battery is not drain totally (So I'm assuming the cross connection did not do any damage). So I'm charging the battery now.
It has 208,296 Miles and the oil pressure is normal when I crank.
Q1 ) is it possible that because of the oil change and excessive wear there is not enough compression to start?
Q2) is something fried due to the cross connection jump start. ( But did not crank during the cross connection time, just put the key in to ignition) No engine light or any signs of waring or smoke came out from the engine during the cross connection.