Buick LeSabre 1990 questions
#33
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Now i change new plugs and wires.
4 plugs (all 3 radiator side) and 1 from sheet were like new and never used. White and gap was metal colored.
2 plugs from sheet side were like anothers but they have white coating on gap. It disappeared when i sweep it swinger very soft.
I check internet and someone says its okay, someone says it running lean and someone says overheat.
What do you think in this case?
Mpg is not super low and lambda seems to be a new and no faults codes about lean.
I dont know how old plugs was, delco. Outside was ac delco text under rust with every plug.
Edit: electrode and gap were okay on every plug. Ps this picture is not my plug but very similar.
4 plugs (all 3 radiator side) and 1 from sheet were like new and never used. White and gap was metal colored.
2 plugs from sheet side were like anothers but they have white coating on gap. It disappeared when i sweep it swinger very soft.
I check internet and someone says its okay, someone says it running lean and someone says overheat.
What do you think in this case?
Mpg is not super low and lambda seems to be a new and no faults codes about lean.
I dont know how old plugs was, delco. Outside was ac delco text under rust with every plug.
Edit: electrode and gap were okay on every plug. Ps this picture is not my plug but very similar.
Last edited by Karpov; 02-06-2014 at 11:29 AM.
#34
Senior Member
True Car Nut
alot of times white crud is coolant leak. are you loosing any? lean or hot plugs most of the time are the metal turns blueish and eats the electrode
#35
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Damn i looked bad those in dark. Now i have pictures of my own plugs.
There is link. you can see more pictures pressing needles in picture SAM 4053 - Aijaa.com
So all plugs were little bit gray, no one wasnt that white like my first example picture.
On the link is picture of all of six plugs.
My cameras flash will give some effect so white is whiter than normal and without flash is little bit too dark.
There is link. you can see more pictures pressing needles in picture SAM 4053 - Aijaa.com
So all plugs were little bit gray, no one wasnt that white like my first example picture.
On the link is picture of all of six plugs.
My cameras flash will give some effect so white is whiter than normal and without flash is little bit too dark.
Last edited by Karpov; 02-06-2014 at 02:34 PM.
#37
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#38
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True Car Nut
3rd on from the left doesnt look that great but if you dont know how long it has been in the car its hard to say if its a big deal or not
#39
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You mean just outer habitat? (that which has most rust than others)
How about gaps and electrodes, fine or still coolant or something?
All are pretty same to my eye in that all six picture.
If its coolant, how the hell it leaks all six cylindres? Oil and coolant looks great, doesnt mix.
I dont know about coolant loss because lower hose leaked but now its fixed about 200miles. Not notable loss.
Exhaust will give steam pretty much but there is freeze. And i have been many cars without head gasket issues but still smokes steam and working well.
Upper hose and lower radiator hose arent rock hard so aint not pressure which could occur head gasket.
How about gaps and electrodes, fine or still coolant or something?
All are pretty same to my eye in that all six picture.
If its coolant, how the hell it leaks all six cylindres? Oil and coolant looks great, doesnt mix.
I dont know about coolant loss because lower hose leaked but now its fixed about 200miles. Not notable loss.
Exhaust will give steam pretty much but there is freeze. And i have been many cars without head gasket issues but still smokes steam and working well.
Upper hose and lower radiator hose arent rock hard so aint not pressure which could occur head gasket.
#40
Senior Member
True Car Nut
i dont know a whole lot about the common issues for that but any engine can have intake manifold gasket leaks, especially on a 24 year old engine