DIS Failure symptoms?

[LGAFF]

Having an issue, when I first start driving my 90, the car will miss and sputter for a short time(10 seconds) then run fine, no related codes..... as the exhaust is poping its unlikely fuel.

Thinking a coil or DIS but odd that it improved once you drive the car

No codes, I do get a code 61 but that is related to the tune/chip

It also waits to present itself between a shift...1-2 etc

[XfireZ51]

Originally Posted by LGAFF

Having an issue, when I first start driving my 90, the car will miss and sputter for a short time(10 seconds) then run fine, no related codes..... as the exhaust is poping its unlikely fuel.

Thinking a coil or DIS but odd that it improved once you drive the car

No codes, I do get a code 61 but that is related to the tune/chip

It also waits to present itself between a shift...1-2 etc

I doubt it's ignition if it improves. Sounds like warm up issues. Have you made any further mods to the car? What happens when you get off the throttle?

[FU]

If you need a DIS to check the problem out PM me Lee.

[LGAFF]

The car has only died once, you have to modulate the throttle to keep it going, off the symptoms stop obviously.....engine pops and bucks pretty violently until it levels out.

[LGAFF]

Thanks for the offer Frank, I have a few spares; I thought maybe it might just be a loose connection somewhere also...I had to replace the starter last night so I checked everything and the issue still presents.

I just find it odd that it improves with use

[LGAFF]

This is a cammed car by the way

[XfireZ51]

Modulating the throttle suggests fuel. R U saying this happened on,y after replacing starter? Small vacuum leak? In between shifts, throttle closing, high vacuum, motor going lean.

[Tyler Townsley]

Originally Posted by LGAFF

The car has only died once, you have to modulate the throttle to keep it going, off the symptoms stop obviously.....engine pops and bucks pretty violently until it levels out.

The ones I have seen go bad are total failures and one that was good below 400 rpm and fell apart above that. I had to use a dis checker to find that one.

Geoff has my checker at the moment but when I get it back you are welcome to use it. I will be picking it up 6 May when i move Queenie from Detroit to the NCM.

Tyler

[LGAFF]

No it was happening before I changed it...I did not swap DIS as I thought it might be a vac leak

Fuel pumps are running 13.4 volts...pressure is normal

Originally Posted by XfireZ51

Modulating the throttle suggests fuel. R U saying this happened on,y after replacing starter? Small vacuum leak? In between shifts, throttle closing, high vacuum, motor going lean.

[LGAFF]

I would think if it were lean I would not hear such pronounced popping in the exhaust