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| still got engine problems https://www.ausmini.com/forums/viewtopic.php?f=2&t=32864 |
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| Author: | Dylans Clubby [ Thu Jun 14, 2007 6:22 pm ] |
| Post subject: | still got engine problems |
hi again, this is a serious post for a change...well as serious as i can be. armageddons motor is ahving issues, theres lots of oil getting into cyl. 4 i believe, as the spark plus is heavily oil fouled. also, i'm getting a puff of blue smoke when i change up gears (but not down????) theres lots of smoke when i first start it in the morning, and when i'm decelerating (using the engine- revs are dropping slowly) the motor also sounds like a lawnmower, im using alot of oil (maybe a litre a week and i dont drive it everyday. in fact, im avoiding driving it) whats the problem? i've had a quick check of compression (using the thumb test, plenty there) so i dont think its the rings, i ahve a feeling a valve is not closing and/or seating properly and somehow oil is getting in through the valve stem. but thats alot of oil to get into such a small area, considering it can get out of other places more easily. TIA |
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| Author: | tinymorris1969 [ Thu Jun 14, 2007 6:52 pm ] |
| Post subject: | |
the only way really that oil can get inside the combustion chamber is either through ur rings or through the valve stem seals, if the blue smoke stops once the car is warmed up then its valve stem seals usually but if it is constant blue smoke u make have oil getting through the rings. Another thing is ur compression rings dont need to be broken for oil to get through, the oil scavenger rings that are on the top and bottom usually scrap the oil off on the downstroke so u may have the rings burnt in that cylinder, and it wouldnt hurt to do a proper compression check to be 100% sure |
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| Author: | slinkey inc [ Thu Jun 14, 2007 7:00 pm ] |
| Post subject: | |
On my dad's Leyland, we found for a while there was oil in the emission system, putting oil i nthe carby manifold, which in turn burns in the motor. Wierd ay.....?? |
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| Author: | Dylans Clubby [ Thu Jun 14, 2007 7:10 pm ] |
| Post subject: | |
that is strange. i dont ahve the pollution gear on though, so its not that. i should get a proper compression test though. another thing someone has said to me is to roll the car in 4th to see if the valves are moving in the right order. good plan? i live on a slight hill (and at the bottom  ) so thats no problem
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| Author: | Morris 1100 [ Thu Jun 14, 2007 7:25 pm ] |
| Post subject: | |
Dylan's Clubby wrote: another thing someone has said to me is to roll the car in 4th to see if the valves are moving in the right order. Good idea. You never know, someone may have snuck into your engine and changed the position of the lobes on your camshaft. 
That is stupid beyond belief. 
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| Author: | tinymorris1969 [ Thu Jun 14, 2007 7:41 pm ] |
| Post subject: | |
lol dude, seriously go get the compression test done if thats fine i would think about taking off the head and checking the bore and piston rings and also replace the valve stem seal |
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| Author: | Morris 1100 [ Thu Jun 14, 2007 7:49 pm ] |
| Post subject: | |
What does compression have to do with oil on the plugs? |
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| Author: | mini_matt [ Thu Jun 14, 2007 8:21 pm ] |
| Post subject: | probelms |
if it is rings letting oil depending on how bad it might make the comp a bit better . the oil will create a better seal, better to get a leakdown test. |
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| Author: | tinymorris1969 [ Thu Jun 14, 2007 8:53 pm ] |
| Post subject: | |
ok compression has nothing to do with oil getting through the piston rings there are three ringso n ur piston 2 are to scrap oil off the cylinder walls and the middle one for compression or the top one... one of the two i cant remember now. im to tired to think but if u are burning alot of oil i would advise u check ur rings and replace ur valve stem seal |
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| Author: | Morris 1100 [ Thu Jun 14, 2007 9:07 pm ] |
| Post subject: | |
tinymorris1969 wrote: ......... there are three ringso n ur piston 2 are to scrap oil off the cylinder walls and the middle one for compression or the top one... one of the two i cant remember now. im to tired to think but if u are burning alot of oil i would advise u check ur rings and replace ur valve stem seal 
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| Author: | mattsmini1971 [ Thu Jun 14, 2007 9:16 pm ] |
| Post subject: | valve stem seals |
it could be ur valve stem seals. when ur car sits for a while and then u start it, it is blowing smoke, yes? it may be letting oil down passed the valve steam seal and into the motor. |
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| Author: | Dylans Clubby [ Thu Jun 14, 2007 10:54 pm ] |
| Post subject: | |
Morris 1100 wrote: Dylan's Clubby wrote: another thing someone has said to me is to roll the car in 4th to see if the valves are moving in the right order. Good idea. You never know, someone may have snuck into your engine and changed the position of the lobes on your camshaft. That is stupid beyond belief. HAHAHAHA yeah i just read that back. i mean, if one of them is misbehaving, not closing 
good call though. man i feel ridiculous!!!! ps yeah lots of smoke when its been sitting a while. strange thing is, the head is basically new, all the seals were new. makes me thing its wierd to be one of the stem seals |
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| Author: | Spaceboy [ Fri Jun 15, 2007 12:06 am ] |
| Post subject: | |
i had a problem with an oily fouled plugs and smokey exhaust and i did a comp test and yep it was down on no.3 and had broken rings when pulled down for rebuild still good for 55hp at the wheels with a single hs4 and there were a couple of bigblocks that ran less at the dyno day 
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| Author: | ss wanab [ Fri Jun 15, 2007 12:17 am ] |
| Post subject: | |
Morris 1100 wrote: tinymorris1969 wrote: ......... there are three ringso n ur piston 2 are to scrap oil off the cylinder walls and the middle one for compression or the top one... one of the two i cant remember now. im to tired to think but if u are burning alot of oil i would advise u check ur rings and replace ur valve stem seal this is comin from a fully fledge k mart apprentice mechanic give him some credit 
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| Author: | Spaceboy [ Fri Jun 15, 2007 12:18 am ] |
| Post subject: | |
we all gotta start somewhere... |
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