250 push turbo kit high afr
- Thread starter wwillf01
- Start date
Other than adding fuel to fix the lean problem is this is sign something is going wrong in the engine?
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You can check your fuel pressure. My boondocker kit had backed off a couple times and had to be turned back up.
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BigFish BC
Well-known member
fuel filter is usually # 1 cause of this,then fuel pump or regulator,a boost leak can cause this too but it wont build boost then.
Thanks bigfish so if I added fuel via the dobek controller and have it maxed on all settings and it is now running between 13 and 13.6 then does this point to the fuel filter also?
Also would the lead in the race fuel jam up the filter
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Ttt
The engine is fine, was it previously in the 12.0 range and something has now changed or is it brand new and not tuned properly?
A motor will build boost with boost leaks unless your talking about a huuuuuge hole or something. It's like your air compressor will still build pressure with a air hose leak but not if your air hose breaks. Almost every single sled or vehicle is boost leak check has multiple boost leaks fyi. If a person hasn't checked/pressurized their system most likely you have some, but prolly not your problem in this case but need more info.
The engine is fine, was it previously in the 12.0 range and something has now changed or is it brand new and not tuned properly?
A motor will build boost with boost leaks unless your talking about a huuuuuge hole or something. It's like your air compressor will still build pressure with a air hose leak but not if your air hose breaks. Almost every single sled or vehicle is boost leak check has multiple boost leaks fyi. If a person hasn't checked/pressurized their system most likely you have some, but prolly not your problem in this case but need more info.
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Thanks when I have it pinned it reaches 10 psi then the gauge bounces... Checking for leaks is next....
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It is a push 250 kit on a 2008 nytro with the extra injector. 1500 miles . It has a gems controller from push . I ran it half of last year with no issue. I should be able to run 96 octane but run 100 because it makes me feel better.. I ride 8000 and up ...
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seano700
Active member
When you say the guage bounces @ 10 psi.. I had a similar issue way back and found the large hose that ties the iac into the inter cooler had fallen off causing a massive leak.. Yes - you will still make boost but the efficiency is way down as the compressor is running beyond it's curve, making a ton of heat.. Also the inter cooler efficiency drops way off (so power is down, and it will seem laggy).. Usually your boost guage tee's into the same lines that the fuel controller references. If this is the case that could explain your afr readings (poor reference pressure).
As a test plug the exhaust, and connect shop air to the intake at 10 psi.. Let your ears guide you from here to the leaks.
Check for moisture in your rising rate regulator (if you have one).. They can freeze off messing with you supply pressure. Usually it's the boost reference line that's the culprit on these
As a test plug the exhaust, and connect shop air to the intake at 10 psi.. Let your ears guide you from here to the leaks.
Check for moisture in your rising rate regulator (if you have one).. They can freeze off messing with you supply pressure. Usually it's the boost reference line that's the culprit on these
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BigFish BC
Well-known member
if it runs fine then your a/f sensor is done,leaded fuel kills them.
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sweidall
Member
I ran it at 10 pounds in MN without a problem and 12 pounds at elevation. Everything is still on my sled and in working order, I'll be removing the charge tube with extra injector and push's special fuel box this monday. Will be taking a few pictures and listing for sale early next week. Pm with any interest.
Wanted to give everyone a update.... It was a bad sensor.. Replaced it and when from an afr of 16 at idle to 10..... Crazy.... Time to take some fuel away
