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Re: '04 running rich
On May 23, 6:24 am, philthy <dbri...@cac.net> wrote:
> 02 sensors and map sensors come to mind first > > > > kevin.do...@ns.sympatico.ca wrote: > > For those of you who like diagnosing strange problems I have a doozy > > for you. > > > The symptoms are as follows: Very rich smelling exhaust, inside of > > tailpipe VERY thickly coated with soot, badly carboned plugs. > > > I have checked the following: Manifold vacuum (20 ish in/Hg at idle in > > gear), done an aceytelene test around the intake and throttle-body > > gaskets/assemblys. The OBD system reports NO PROBLEMS, the mpg figures > > are all over the map over the past 2 months I have gotten from 14 to > > 33! mpg using the same brand/grade of fuel driving the same routes > > every week. I have made NO changes to the vehicle WHAT SO EVER. > > > This has me stumped. > > > How about you.- Hide quoted text - > > - Show quoted text - Get a gauge on the fuel rail (assuming your year has provisions for this) and ensure that the supply/return paths are up to snuff. On the other hand, if mine ever turned out 33 mpg, I'd let it do whatever the hell it wants.... Jon |
Re: '04 running rich
"Jon" <jongoddard@gmail.com> wrote in message news:1179936573.399407.58460@u30g2000hsc.googlegro ups.com... > On May 23, 6:24 am, philthy <dbri...@cac.net> wrote: >> 02 sensors and map sensors come to mind first >> >> >> >> kevin.do...@ns.sympatico.ca wrote: >> > For those of you who like diagnosing strange problems I have a doozy >> > for you. >> >> > The symptoms are as follows: Very rich smelling exhaust, inside of >> > tailpipe VERY thickly coated with soot, badly carboned plugs. >> >> > I have checked the following: Manifold vacuum (20 ish in/Hg at idle in >> > gear), done an aceytelene test around the intake and throttle-body >> > gaskets/assemblys. The OBD system reports NO PROBLEMS, the mpg figures >> > are all over the map over the past 2 months I have gotten from 14 to >> > 33! mpg using the same brand/grade of fuel driving the same routes >> > every week. I have made NO changes to the vehicle WHAT SO EVER. >> >> > This has me stumped. >> >> > How about you.- Hide quoted text - >> >> - Show quoted text - > > Get a gauge on the fuel rail (assuming your year has provisions for > this) and ensure that the supply/return paths are up to snuff. > > On the other hand, if mine ever turned out 33 mpg, I'd let it do > whatever the hell it wants.... And, it clearly would not be running rich if it delivered 33mpg. |
Re: '04 running rich
"Jon" <jongoddard@gmail.com> wrote in message news:1179936573.399407.58460@u30g2000hsc.googlegro ups.com... > On May 23, 6:24 am, philthy <dbri...@cac.net> wrote: >> 02 sensors and map sensors come to mind first >> >> >> >> kevin.do...@ns.sympatico.ca wrote: >> > For those of you who like diagnosing strange problems I have a doozy >> > for you. >> >> > The symptoms are as follows: Very rich smelling exhaust, inside of >> > tailpipe VERY thickly coated with soot, badly carboned plugs. >> >> > I have checked the following: Manifold vacuum (20 ish in/Hg at idle in >> > gear), done an aceytelene test around the intake and throttle-body >> > gaskets/assemblys. The OBD system reports NO PROBLEMS, the mpg figures >> > are all over the map over the past 2 months I have gotten from 14 to >> > 33! mpg using the same brand/grade of fuel driving the same routes >> > every week. I have made NO changes to the vehicle WHAT SO EVER. >> >> > This has me stumped. >> >> > How about you.- Hide quoted text - >> >> - Show quoted text - > > Get a gauge on the fuel rail (assuming your year has provisions for > this) and ensure that the supply/return paths are up to snuff. > > On the other hand, if mine ever turned out 33 mpg, I'd let it do > whatever the hell it wants.... And, it clearly would not be running rich if it delivered 33mpg. |
Re: '04 running rich
"Jon" <jongoddard@gmail.com> wrote in message news:1179936573.399407.58460@u30g2000hsc.googlegro ups.com... > On May 23, 6:24 am, philthy <dbri...@cac.net> wrote: >> 02 sensors and map sensors come to mind first >> >> >> >> kevin.do...@ns.sympatico.ca wrote: >> > For those of you who like diagnosing strange problems I have a doozy >> > for you. >> >> > The symptoms are as follows: Very rich smelling exhaust, inside of >> > tailpipe VERY thickly coated with soot, badly carboned plugs. >> >> > I have checked the following: Manifold vacuum (20 ish in/Hg at idle in >> > gear), done an aceytelene test around the intake and throttle-body >> > gaskets/assemblys. The OBD system reports NO PROBLEMS, the mpg figures >> > are all over the map over the past 2 months I have gotten from 14 to >> > 33! mpg using the same brand/grade of fuel driving the same routes >> > every week. I have made NO changes to the vehicle WHAT SO EVER. >> >> > This has me stumped. >> >> > How about you.- Hide quoted text - >> >> - Show quoted text - > > Get a gauge on the fuel rail (assuming your year has provisions for > this) and ensure that the supply/return paths are up to snuff. > > On the other hand, if mine ever turned out 33 mpg, I'd let it do > whatever the hell it wants.... And, it clearly would not be running rich if it delivered 33mpg. |
Re: '04 running rich
"Jon" <jongoddard@gmail.com> wrote in message news:1179936573.399407.58460@u30g2000hsc.googlegro ups.com... > On May 23, 6:24 am, philthy <dbri...@cac.net> wrote: >> 02 sensors and map sensors come to mind first >> >> >> >> kevin.do...@ns.sympatico.ca wrote: >> > For those of you who like diagnosing strange problems I have a doozy >> > for you. >> >> > The symptoms are as follows: Very rich smelling exhaust, inside of >> > tailpipe VERY thickly coated with soot, badly carboned plugs. >> >> > I have checked the following: Manifold vacuum (20 ish in/Hg at idle in >> > gear), done an aceytelene test around the intake and throttle-body >> > gaskets/assemblys. The OBD system reports NO PROBLEMS, the mpg figures >> > are all over the map over the past 2 months I have gotten from 14 to >> > 33! mpg using the same brand/grade of fuel driving the same routes >> > every week. I have made NO changes to the vehicle WHAT SO EVER. >> >> > This has me stumped. >> >> > How about you.- Hide quoted text - >> >> - Show quoted text - > > Get a gauge on the fuel rail (assuming your year has provisions for > this) and ensure that the supply/return paths are up to snuff. > > On the other hand, if mine ever turned out 33 mpg, I'd let it do > whatever the hell it wants.... And, it clearly would not be running rich if it delivered 33mpg. |
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