Lots of smoke at cold start, would like it to go away
10-11-2015, 07:18 AM
#16
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the bosch 190s should have the correct spray angle for your IC truck
10-11-2015, 07:56 AM
#17
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10-20-2015, 10:16 PM
#18
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hey guys, I replace the air charge temp sensor and looked for any loose wires, everything seems legit.
immediately turned key on after replacing sensor, no grid heater. light comes on for a few seconds but no grids. gave up lastnight.
tonight I tried the key and the grids cycled. atleast i assume they are working because i can hear the relays on the fender clicking on and then off. so I tried them again and again, trying to get them to not work. they worked 10 times in a row. even with air charge temp unplugged.
then I investigated more under the hood for anything loose, milled around for a few minutes in the garage, closed the hood, tried one more time, and no grids, no click from the fender, nothing. what the hell. started her up and she poured white smoke and sputtered and chugged like a typical cold start.
where should I look now... intermittent relays maybe????
immediately turned key on after replacing sensor, no grid heater. light comes on for a few seconds but no grids. gave up lastnight.
tonight I tried the key and the grids cycled. atleast i assume they are working because i can hear the relays on the fender clicking on and then off. so I tried them again and again, trying to get them to not work. they worked 10 times in a row. even with air charge temp unplugged.
then I investigated more under the hood for anything loose, milled around for a few minutes in the garage, closed the hood, tried one more time, and no grids, no click from the fender, nothing. what the hell. started her up and she poured white smoke and sputtered and chugged like a typical cold start.
where should I look now... intermittent relays maybe????
10-20-2015, 11:02 PM
#19
So it was the sensor closest to the intake elbow that you changed, correct?
10-20-2015, 11:31 PM
#20
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the bosch 190s should have the correct spray angle for your IC truck. maybe I missed it, but where is your pump timing at?
edit/addition:
your grid heaters cycle at 60*F on an IC truck and 40*F on a non-ic truck. have you seen temps much below this? plenty of guys unhook their grid heaters entirely and still don't see this smoke that you're describing at cold start-up. I really don't think that this is a grid heater problem, but I've been wrong plenty of times
edit/addition:
your grid heaters cycle at 60*F on an IC truck and 40*F on a non-ic truck. have you seen temps much below this? plenty of guys unhook their grid heaters entirely and still don't see this smoke that you're describing at cold start-up. I really don't think that this is a grid heater problem, but I've been wrong plenty of times
I guess the temp today was right around 60 degrees as well. So maybe not a good day to test the grids. Truck had been sitting for 2 days though.
10-21-2015, 09:43 AM
#22
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the bosch 190s should have the correct spray angle for your IC truck. maybe I missed it, but where is your pump timing at?
edit/addition:
your grid heaters cycle at 60*F on an IC truck and 40*F on a non-ic truck. have you seen temps much below this? plenty of guys unhook their grid heaters entirely and still don't see this smoke that you're describing at cold start-up. I really don't think that this is a grid heater problem, but I've been wrong plenty of times
edit/addition:
your grid heaters cycle at 60*F on an IC truck and 40*F on a non-ic truck. have you seen temps much below this? plenty of guys unhook their grid heaters entirely and still don't see this smoke that you're describing at cold start-up. I really don't think that this is a grid heater problem, but I've been wrong plenty of times
10-21-2015, 10:10 AM
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10-21-2015, 07:40 PM
#24
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91.5 and 2nd gen trucks use a 145 degree spray angle. The "bowl" in the piston crown that creates the swirl chamber for combustion is smaller in diameter, so if you use a wider spray it doesn't end up in the correct part of the swirl chamber . . .
You might have some other tuning problems, but I do think different injectors will help.
You might have some other tuning problems, but I do think different injectors will help.
10-21-2015, 08:04 PM
#25
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91.5 and 2nd gen trucks use a 145 degree spray angle. The "bowl" in the piston crown that creates the swirl chamber for combustion is smaller in diameter, so if you use a wider spray it doesn't end up in the correct part of the swirl chamber . . .
You might have some other tuning problems, but I do think different injectors will help.
You might have some other tuning problems, but I do think different injectors will help.
You should look up The Hungry Diesel and give them a call about injectors. They can answer your questions for sure and are very reasonably priced.
10-21-2015, 08:20 PM
#26
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hey guys just pulled out the receipt for my injectors
here is what I wrote on the receipt for my personal notes
bosch part # 0432-133-875
they are production injectors for 5.9 CPL #856 which was rated at 180hp@2500rpm and 451ft/lb@1700rpm
sealing washer part # 3906659
they have a 7mm tip
here is what I wrote on the receipt for my personal notes
bosch part # 0432-133-875
they are production injectors for 5.9 CPL #856 which was rated at 180hp@2500rpm and 451ft/lb@1700rpm
sealing washer part # 3906659
they have a 7mm tip
10-21-2015, 08:22 PM
#27
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91.5 and 2nd gen trucks use a 145 degree spray angle. The "bowl" in the piston crown that creates the swirl chamber for combustion is smaller in diameter, so if you use a wider spray it doesn't end up in the correct part of the swirl chamber . . .
You might have some other tuning problems, but I do think different injectors will help.
You might have some other tuning problems, but I do think different injectors will help.
good to know. I don't ever remember having this issue with the stock injectors. should have stuck with them!
thanks!
10-21-2015, 08:38 PM
#28
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so according to this place NationWide Parts Distributors ,
this was an 86-90... that would mean non-intercooled. which would mean different spray angle???
I may be ready to dump some cash on injectors now!
this was an 86-90... that would mean non-intercooled. which would mean different spray angle???
I may be ready to dump some cash on injectors now!
10-22-2015, 10:26 AM
#29
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hey guys just pulled out the receipt for my injectors
here is what I wrote on the receipt for my personal notes
bosch part # 0432-133-875
they are production injectors for 5.9 CPL #856 which was rated at 180hp@2500rpm and 451ft/lb@1700rpm
sealing washer part # 3906659
they have a 7mm tip
here is what I wrote on the receipt for my personal notes
bosch part # 0432-133-875
they are production injectors for 5.9 CPL #856 which was rated at 180hp@2500rpm and 451ft/lb@1700rpm
sealing washer part # 3906659
they have a 7mm tip