Cold start problem with Walbro400 & FIC1100
#1
Cold start problem with Walbro400 & FIC1100
Hey guys. My current Evo x turbo upgrade includes a single Walbro 400 and FIC 1100 injectors running on e85 and 22 psi of boost. Recently I've been having problems turning the engine over from cold start. It takes about 2-3 crank cycles to get the motor running. I don't notice any loud noises or foul odors coming from the FP when it's first priming and all the mods are only a few months old. I've had the cold start map adjusted and the injection time increased but neither resolved this problem. The tuner shop said the Walbro 400 has problems with maintaining fuel pressure during cold starts and that there's no way to fix it directly. Does anyone else have this problem? Does anyone have advice or opinions? Any help will be appreciated.
Here's a short vid clip showing the cold start issue:
Here's a short vid clip showing the cold start issue:
#5
Thanks for the input, guys. Is there a chart or formula that shows how to adjust the cranking enrichment? And the air temp is around 55-60 degrees so I think changing cranking enrichment had something to do with my cold start problem.
#6
So I brought up the topic of adjusting the cranking enrichment table to my tuner shop and they claim that they've already made these adjustments. They seem to think the cold start problem may be caused by a defective Walbro FP, which they backed up with two other customer complaints of failing Walbros. Any thoughts or opinions on this?
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#8
EvoM Guru
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From: Tri-Cities, WA // Portland, OR
So I brought up the topic of adjusting the cranking enrichment table to my tuner shop and they claim that they've already made these adjustments. They seem to think the cold start problem may be caused by a defective Walbro FP, which they backed up with two other customer complaints of failing Walbros. Any thoughts or opinions on this?
#9
#11
I've got NGK One Step Colder spark plugs for the Evo X. So far there's a cloud of doubt hanging over this tuner shop. I've gone back and forth to their shop about 5-6 times within the last two months just to address this one cold start problem. My confidence in them is starting to wane now. If there's anyone living in NorCal and knows of a good Evo X tuner, please let me know. I may decide to cut off all ties with my current tuner if things don't improve. Thanks and stay frosty, my friends.
#12
I've got NGK One Step Colder spark plugs for the Evo X. So far there's a cloud of doubt hanging over this tuner shop. I've gone back and forth to their shop about 5-6 times within the last two months just to address this one cold start problem. My confidence in them is starting to wane now. If there's anyone living in NorCal and knows of a good Evo X tuner, please let me know. I may decide to cut off all ties with my current tuner if things don't improve. Thanks and stay frosty, my friends.
#13
EvoM Guru
iTrader: (50)
Joined: Mar 2006
Posts: 9,675
Likes: 130
From: Tri-Cities, WA // Portland, OR
I've got NGK One Step Colder spark plugs for the Evo X. So far there's a cloud of doubt hanging over this tuner shop. I've gone back and forth to their shop about 5-6 times within the last two months just to address this one cold start problem. My confidence in them is starting to wane now. If there's anyone living in NorCal and knows of a good Evo X tuner, please let me know. I may decide to cut off all ties with my current tuner if things don't improve. Thanks and stay frosty, my friends.
#14