what causes this
04-29-2007, 11:42 PM
#21
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Join Date: Dec 2005
Location: Lil' Rhody
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RE: what causes this
i'd say... pull the chip out, because they are useless... then pull your fuel injectors out and move the #1 and #8 injector to somewhere else
if the problem follows the injectors, youve found your problem. If the problem stays... suspect something electrical
if the problem follows the injectors, youve found your problem. If the problem stays... suspect something electrical
04-29-2007, 11:52 PM
#22
2nd Gear Member
Thread Starter
Join Date: Feb 2007
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Posts: 156
RE: what causes this
i don't have a chip in now the mechanic told me i would have to get one thats why i'm asking you guys, he said i needed a custom chip. I never thought about moving the injectors i may try that when i get some time, also what kind of electrical problems would cause that.
04-29-2007, 11:54 PM
#23
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Join Date: Dec 2005
Location: Lil' Rhody
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RE: what causes this
could be a chaffed wire causing cyl 1 and 8 injectors to fire twice... or it could be a problem with weak spark in those two cylinders, causing a slow burn and fuel being dumped into the exhaust.... or maybe the injectors are leaking
05-01-2007, 12:25 AM
#25
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RE: what causes this
I just wanted to add something from S B F tech.com...
I got a reply from Jay Allen, the cam guru at Camshaft Innovations. I just figured i'd post this up because Mattdel seems to doubt me and is having a power trip... so I just wanted to show him why so many people ask MY advise, and not his!
[IMG]local://upfiles/26017/056411E28FC743B48EB71CE912146F58.jpg[/IMG]
I got a reply from Jay Allen, the cam guru at Camshaft Innovations. I just figured i'd post this up because Mattdel seems to doubt me and is having a power trip... so I just wanted to show him why so many people ask MY advise, and not his!
[IMG]local://upfiles/26017/056411E28FC743B48EB71CE912146F58.jpg[/IMG]
05-01-2007, 12:34 AM
#26
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Join Date: Nov 2006
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RE: what causes this
yay for you. my powertrip is justified. you act like you rule this forum. lots of people here, pal. your not the only tech.
btw, as you posted in your own image, i am right. lean causes glowing. as does rich. my suggestion of lean was directed towards him and his particular problem. i've already told you in PM that you are correct as well, but this problem doesn't sound rich to me. his timing has been adjusted, and it didn't change much. that would tell me that its lean, instead of rich.
btw, as you posted in your own image, i am right. lean causes glowing. as does rich. my suggestion of lean was directed towards him and his particular problem. i've already told you in PM that you are correct as well, but this problem doesn't sound rich to me. his timing has been adjusted, and it didn't change much. that would tell me that its lean, instead of rich.
05-01-2007, 12:36 AM
#27
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RE: what causes this
ORIGINAL: mattdel
yay for you. my powertrip is justified. you act like you rule this forum. lots of people here, pal. your not the only tech.
btw, as you posted in your own image, i am right. lean causes glowing. as does rich. my suggestion of lean was directed towards him and his particular problem. i've already told you in PM that you are correct as well, but this problem doesn't sound rich to me. his timing has been adjusted, and it didn't change much. that would tell me that its lean, instead of rich.
yay for you. my powertrip is justified. you act like you rule this forum. lots of people here, pal. your not the only tech.
btw, as you posted in your own image, i am right. lean causes glowing. as does rich. my suggestion of lean was directed towards him and his particular problem. i've already told you in PM that you are correct as well, but this problem doesn't sound rich to me. his timing has been adjusted, and it didn't change much. that would tell me that its lean, instead of rich.
05-01-2007, 12:37 AM
#28
5th Gear Member
Join Date: Oct 2005
Location: Ohio USA
Posts: 4,616
RE: what causes this
ORIGINAL: AdderMk2
could be a chaffed wire causing cyl 1 and 8 injectors to fire twice... or it could be a problem with weak spark in those two cylinders, causing a slow burn and fuel being dumped into the exhaust.... or maybe the injectors are leaking
could be a chaffed wire causing cyl 1 and 8 injectors to fire twice... or it could be a problem with weak spark in those two cylinders, causing a slow burn and fuel being dumped into the exhaust.... or maybe the injectors are leaking
1. that orange wire you took off your old heads is the 0'2 senosor's ground.
2. readjust your valve lash one cylinder at a time sounds like those two cyl's may be misadjusted and take your time, im sure your didnt wait for the lifters to bleed down and then check again.
3. any vacumm leaks could be verified with starting fluid wile the car is warming up not full hot. you dont want a fire.
4. check engine temp, , also some new headers glow red for a while
05-01-2007, 12:43 AM
#30
5th Gear Member
Join Date: Oct 2005
Location: Ohio USA
Posts: 4,616
RE: what causes this
ORIGINAL: mattdel
yes, but all the pipes were red. he adjusted the timing, and it went to 2 cylinders instead of 8.
yes, but all the pipes were red. he adjusted the timing, and it went to 2 cylinders instead of 8.
If all injectors,chips, codes checked and wiring etc are in order(external) usually the issue has to be internal- valve lash ,
ALOT of 5.0's ive seen, do this [:'(], last encounter was the lower and upper intake not sealing, so i used a dab of rtv.
other time, the valve lash was wrong and some valves were out of sync with others.
another, the new headers just did that, after we drove it a while it stopped