Low Rpm Ping...
Senior Member
Joined: Apr 2002
Posts: 2,930
From: IL
Originally Posted by djgiantrobot' date='Oct 23 2003, 06:34 AM
i dunno about haltec, but on mine there is a decell enrichment. I have mine set to cut the injectors back on at 1800rpm. I found 6% enrichment was a good value to use to minimize stalling. Too much or too little fuel will make your car sputter or stall when you come to a stop before it regains idle. This is specific to electromotive however, i dunno how this applies to haltec
Senior Member
Joined: Oct 2003
Posts: 3,502
From: Canada
Originally Posted by J-Rat' date='Oct 23 2003, 12:03 AM
Kind of hard to test this, dont you think?
At idle, the timing signal from all coils is strong, and right on time.
How would you test the coils under load?
At idle, the timing signal from all coils is strong, and right on time.
How would you test the coils under load?
I almost had an engine fire due to a power wire that rubbed though and started arcing on the power steering pulley. You would normally think I would lose spark altogether (randomly as it shorted out), but it starting detonating like a bastard and my tach kept dropping then pegging 8K, that was initially why I pulled over!
Senior Member
Joined: Nov 2001
Posts: 1,622
From: LA, USA
Originally Posted by J-Rat' date='Oct 23 2003, 04:03 AM
Kind of hard to test this, dont you think?
At idle, the timing signal from all coils is strong, and right on time.
How would you test the coils under load?
At idle, the timing signal from all coils is strong, and right on time.
How would you test the coils under load?
I had that problem once. Turn out to me the wire was kinked and cause the coil to misfire with load.
Just a thought.
Senior Member
Joined: Nov 2001
Posts: 1,622
From: LA, USA
Originally Posted by ColinRX7' date='Oct 23 2003, 10:51 AM
[quote name='J-Rat' date='Oct 23 2003, 12:03 AM'] Kind of hard to test this, dont you think?
At idle, the timing signal from all coils is strong, and right on time.
How would you test the coils under load?
At idle, the timing signal from all coils is strong, and right on time.
How would you test the coils under load?
I almost had an engine fire due to a power wire that rubbed though and started arcing on the power steering pulley. You would normally think I would lose spark altogether (randomly as it shorted out), but it starting detonating like a bastard and my tach kept dropping then pegging 8K, that was initially why I pulled over! [/quote]
LIke he said, does your tach jump around????
Thread Starter
Member
Joined: Jan 2002
Posts: 35
From: Tucson Az
Nope TACH is solid.
I can monitor the voltages though.. Not a problem, except for the fact that I cant keep road testing it for a ping! I gotta do a bunch of mods at once, and go out and see if it got fixed.
Its already been pinged about 5 or 6 times, HARD. I am getting really nervous about keeping it up. So I am going to wait till the weekend when the new injectors are installed, and the FPR is in.
Jarrett
I can monitor the voltages though.. Not a problem, except for the fact that I cant keep road testing it for a ping! I gotta do a bunch of mods at once, and go out and see if it got fixed.
Its already been pinged about 5 or 6 times, HARD. I am getting really nervous about keeping it up. So I am going to wait till the weekend when the new injectors are installed, and the FPR is in.
Jarrett
Thread Starter
Member
Joined: Jan 2002
Posts: 35
From: Tucson Az
Which at present is the theory I am going on... But I am always open to more suggestions.
The Blitz 700 cc primaries should be here this weekend, and as previously stated, the AEM FPR is already here.
Jarrett
The Blitz 700 cc primaries should be here this weekend, and as previously stated, the AEM FPR is already here.
Jarrett
Senior Member
Joined: Oct 2003
Posts: 1,420
From: Boston Ma.
But you should know better than to run upgraded injectors on a 15 yr old fuel pressure regulator! 
The stock FPR sometimes getts too weak to support the stock injectors. I personally dont think its a coincidence that your engine pings as soon as the 720's come on. But at the same time this isnt the first time you heard this from me.
Senior Member
Joined: May 2002
Posts: 22,465
From: California
Originally Posted by djgiantrobot' date='Oct 22 2003, 10:34 PM
i dunno about haltec, but on mine there is a decell enrichment. I have mine set to cut the injectors back on at 1800rpm. I found 6% enrichment was a good value to use to minimize stalling. Too much or too little fuel will make your car sputter or stall when you come to a stop before it regains idle. This is specific to electromotive however, i dunno how this applies to haltec
mike