I Am A Beast
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Joined: Jun 2003
Posts: 568
Originally Posted by Fd3BOOST' date='Nov 9 2003, 02:24 PM
I will tackle this latertrhis week.
But just a brief description of my problem.
I set the fuel at +12 at idle (it normally+20) on my purple.
And adjust the idle set screw and get the idle to sit around 800rpm give or take a 100rpm as it flutters. And it seems to keep dropping itself say down to 700-600 and even 500rpm. Sometimes getting slow enough to stall the engine. I recorrect the fuel and it repeats itself.
Sorts guessing this to be a fuel delivery problem or a spark related problem.
Anyone have any thoughts?
But just a brief description of my problem.
I set the fuel at +12 at idle (it normally+20) on my purple.
And adjust the idle set screw and get the idle to sit around 800rpm give or take a 100rpm as it flutters. And it seems to keep dropping itself say down to 700-600 and even 500rpm. Sometimes getting slow enough to stall the engine. I recorrect the fuel and it repeats itself.
Sorts guessing this to be a fuel delivery problem or a spark related problem.
Anyone have any thoughts?
Do you mean -20 usually and - 12 now???
I have the AP still and the smoothest I can get my idle is -14 (still rich IMO) and 720 rpms with no load. Pulls solid 14 in-hg. 16 in-hg with electrical load.
I'm going to try and get it to around -18, a little higher rpm and 15 in-hg...to try and smooth out the exhaust pops.
Thread Starter
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Joined: Jun 2002
Posts: 9,725
From: La Plata, Maryland
Originally Posted by DUB' date='Nov 10 2003, 09:09 AM
[quote name='Fd3BOOST' date='Nov 9 2003, 02:24 PM'] I will tackle this latertrhis week.
But just a brief description of my problem.
I set the fuel at +12 at idle (it normally+20) on my purple.
And adjust the idle set screw and get the idle to sit around 800rpm give or take a 100rpm as it flutters. And it seems to keep dropping itself say down to 700-600 and even 500rpm. Sometimes getting slow enough to stall the engine. I recorrect the fuel and it repeats itself.
Sorts guessing this to be a fuel delivery problem or a spark related problem.
Anyone have any thoughts?
But just a brief description of my problem.
I set the fuel at +12 at idle (it normally+20) on my purple.
And adjust the idle set screw and get the idle to sit around 800rpm give or take a 100rpm as it flutters. And it seems to keep dropping itself say down to 700-600 and even 500rpm. Sometimes getting slow enough to stall the engine. I recorrect the fuel and it repeats itself.
Sorts guessing this to be a fuel delivery problem or a spark related problem.
Anyone have any thoughts?
Do you mean -20 usually and - 12 now???
I have the AP still and the smoothest I can get my idle is -14 (still rich IMO) and 720 rpms with no load. Pulls solid 14 in-hg. 16 in-hg with electrical load.
I'm going to try and get it to around -18, a little higher rpm and 15 in-hg...to try and smooth out the exhaust pops. [/quote]
No mine is +12 was +20.
I have a heavily ported engine so I have to add fuel at idle.
Thread Starter
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Joined: Jun 2002
Posts: 9,725
From: La Plata, Maryland
Originally Posted by 93 R1' date='Nov 9 2003, 04:16 PM
read my post about last night. That will solve all your problems.
If the idle won't stay stable you could have a vac leak, TPS problem, intake leak, fuel supply, etc...
How old is your fuel filter?
If the idle won't stay stable you could have a vac leak, TPS problem, intake leak, fuel supply, etc...
How old is your fuel filter?
But the engine is getting to much fuel, not fuel starvation.
If it wasnt getting enough fuel, how would the plugs have gotten fouled?
Thread Starter
Senior Member
Joined: Jun 2002
Posts: 9,725
From: La Plata, Maryland
Originally Posted by 93 R1' date='Nov 10 2003, 11:26 AM
not enough spark from the bad coil
Thanks I will figure it out.
Thread Starter
Senior Member
Joined: Jun 2002
Posts: 9,725
From: La Plata, Maryland
Originally Posted by DUB' date='Nov 11 2003, 05:00 AM
[quote name='Fd3BOOST' date='Nov 10 2003, 11:09 AM']
I have a heavily ported engine so I have to add fuel at idle.
I have a heavily ported engine so I have to add fuel at idle.
My ports are larger than standard PFS ports.
I also opened up the exhaust side which PFS does not do on their "street ports"
I did use their template as a guideline, but i did go "outside the lines"
That is the benifit to porting the engine yourself instead of paying them to do it for you.
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