Update: Opti Testing?
Thread Starter
Burning Brakes
Joined: Aug 2004
Posts: 771
Likes: 0
From: Washington District of Columbia
Update: Opti Testing?
Sprayed water on wires — no "4th of July" — wires GOOD!
6th gear under load — assuming Opti GOOD!
But, I can smell fumes reeking from somewhere — strange?
Purchased MAP Sensor. Looking to purchase MAF & possibly
an IAT sensors too, if necessary. One of the 2 appears to be
very expensive.
Still concerned about the smelling of the fumes — anyone have
a clue?
Thanks again all.
6th gear under load — assuming Opti GOOD!
But, I can smell fumes reeking from somewhere — strange?
Purchased MAP Sensor. Looking to purchase MAF & possibly
an IAT sensors too, if necessary. One of the 2 appears to be
very expensive.
Still concerned about the smelling of the fumes — anyone have
a clue?
Thanks again all.
Team Owner
Joined: Feb 2006
Posts: 23,115
Likes: 117
From: San Antonio Texas
I would check the fuel pressure regulator vacuum hose to see if it is sucking fuel out of the fuel press reg. If I remember correctly, you were running a blower also. I would make sure the fresh air intake hose for the opti is out of the pressurized path, and the vacuum hose has a check valve it it.
Thread Starter
Burning Brakes
Joined: Aug 2004
Posts: 771
Likes: 0
From: Washington District of Columbia
I would check the fuel pressure regulator vacuum hose to see if it is sucking fuel out of the fuel press reg. If I remember correctly, you were running a blower also. I would make sure the fresh air intake hose for the opti is out of the pressurized path, and the vacuum hose has a check valve it it.
Team Owner
Joined: Feb 2006
Posts: 23,115
Likes: 117
From: San Antonio Texas
There is also a vapor charcoal canister and relay/valve for gas tank fumes but I really don't know how that system works. Just know it will stink up the joint if it doesn't purge correctly.
Maybe somebody else here knows how to check that.
Maybe somebody else here knows how to check that.
Le Mans Master
Joined: Dec 2006
Posts: 5,139
Likes: 482
From: H-Town Texas
Just a note, just because wires pass the water test, doesn't neccessarily mean they're good. The coductors inside can "wear out" over time and not conduct as well as when new, reducing spark. They can also crack, which greatly reduces the amount of charge going to plug, and may even cause misfire.
FPR is a good chance as well. Symptoms, of course if there's fuel in the vacuum line, as well as a long crank situation at start up. Sometimes appearing as a misfire, with backfires through the intake and white smoke from raw fuel as the ignition fights through the extra juice in the cylinder.
Ignition coil module, and coil are common culprits at this age as well.
FPR is a good chance as well. Symptoms, of course if there's fuel in the vacuum line, as well as a long crank situation at start up. Sometimes appearing as a misfire, with backfires through the intake and white smoke from raw fuel as the ignition fights through the extra juice in the cylinder.
Ignition coil module, and coil are common culprits at this age as well.
Thread Starter
Burning Brakes
Joined: Aug 2004
Posts: 771
Likes: 0
From: Washington District of Columbia
Just a note, just because wires pass the water test, doesn't neccessarily mean they're good. The coductors inside can "wear out" over time and not conduct as well as when new, reducing spark. They can also crack, which greatly reduces the amount of charge going to plug, and may even cause misfire. FPR is a good chance as well. Symptoms, of course if there's fuel in the vacuum line, as well as a long crank situation at start up. Sometimes appearing as a misfire, with backfires through the intake and white smoke from raw fuel as the ignition fights through the extra juice in the cylinder. Ignition coil module, and coil are common culprits at this age as well.
real problem after increasing to high rpms /speeds.?? I did replace the
MAP Sensor as a start. Thanks again.
