Fuel In Oil
#1
Ever since I got my car running at the end of June It seems to put fuel into the oil pretty fast. I can change it and drive it 50 miles and be right back to a dipstick that smells like gas. After ~300 miles I can actually start to see the oil level rise a tad, maybe 1/8". I know it's rich in areas but even if it's very rich will this much fuel seep past the seals into the oil?
It's a 13B-RE with no PCV setup, the vents just go to free air. I know that isn't helping the situation but still seems like a lot of fuel
It's a 13B-RE with no PCV setup, the vents just go to free air. I know that isn't helping the situation but still seems like a lot of fuel
#2
the fd's do this too, i think its just being rich. you not having any sort of vacuum on the crank case prolly isnt helping.
actually mine kinda does the same thing, i havent really looked into it too much yet
mike
actually mine kinda does the same thing, i havent really looked into it too much yet
mike
#3
Think if I hook direct vacuum to one of the ports on the filler neck it would be ok?
If I remember right there is a vacuum port right at or near the primary injectors, would this be a good place to run the line to the filler neck? That's if it's ok to run dirrect vacuum...
If I remember right there is a vacuum port right at or near the primary injectors, would this be a good place to run the line to the filler neck? That's if it's ok to run dirrect vacuum...
#5
Check to make sure your ECU is cutting fuel on decel! I fucked up one motor (spun bearings) and thought I was just running to rich. I dialed in the fuel and was still getting fuel in my oil. One day I was watching my inj duty on decel and it was staying the same after I got off the gas. I also was making nice flame shows on decel. After I fixed the problem(inj duty goes to 0% on decel) I no longer get fuel in my oil(not anymore than the normal rotary).
#6
If your ECU does not have decel settings, you can set the fuel map up to give no fuel in the decel vaccuum areas. On my car I never see -550 vaccuum while driving. I only see these values when my car goes into decel, so what I did was set the whole -600 row to zero. It's not perfect , but it works. I run a power fc, which does have decel settings, but I was having problems with it, and did this as a temp fix(1 and a half years).
#8
Originally Posted by setzep' date='Oct 16 2003, 09:16 AM
Intresting, I thought rotaries didn't recover well from fuel cut on decel? In the 22-30ingh areas I have it set to ~1.8-2ms, would that be too much fuel? (550cc primary inj)
I think more of the compromise that ought to be met here is keeping a stoich to lean mixture in the motor on decel (30 to ~15" vacuum) to help prevent the problem that IGY ran into (although I'm still not sure if that's all that was entirely the problem nor have I ever heard of that happening before).
B
#9
Originally Posted by BDC' date='Oct 16 2003, 09:39 AM
They don't. I've run into this issue many times.
I think more of the compromise that ought to be met here is keeping a stoich to lean mixture in the motor on decel (30 to ~15" vacuum) to help prevent the problem that IGY ran into (although I'm still not sure if that's all that was entirely the problem nor have I ever heard of that happening before).
B
I think more of the compromise that ought to be met here is keeping a stoich to lean mixture in the motor on decel (30 to ~15" vacuum) to help prevent the problem that IGY ran into (although I'm still not sure if that's all that was entirely the problem nor have I ever heard of that happening before).
B
also if its too lean on decel it will want to buck
mike
#10
Originally Posted by j9fd3s' date='Oct 16 2003, 09:45 AM
[quote name='BDC' date='Oct 16 2003, 09:39 AM'] They don't. I've run into this issue many times.
I think more of the compromise that ought to be met here is keeping a stoich to lean mixture in the motor on decel (30 to ~15" vacuum) to help prevent the problem that IGY ran into (although I'm still not sure if that's all that was entirely the problem nor have I ever heard of that happening before).
B
I think more of the compromise that ought to be met here is keeping a stoich to lean mixture in the motor on decel (30 to ~15" vacuum) to help prevent the problem that IGY ran into (although I'm still not sure if that's all that was entirely the problem nor have I ever heard of that happening before).
B
also if its too lean on decel it will want to buck
mike [/quote]
Yep. Same issue I've run into several times, Mike. That's why I don't use it.
B