slitt
New Member
- Joined
- Jul 25, 2020
- Messages
- 7
- Reaction score
- 3
- Points
- 3
- Age
- 47
- Location
- Adelaide
- Members Ride
- VH Commodore w/VN 304
Hi guys
Wondering if anyone has an idea what this could be..
I fitted a VQ 5 litre to my VH, running the VN ECU and loom.
The motor started up first pop, no probs. No errors come up (check engine light)
It idles fine, but when i rev it over about 2000 RPM with light throttle it starts coughing and spluttering. Backfiring out the exhaust. On the road with more than 1/2 throttle it seems to have power, maybe not 100% smooth.
I think it is running rich as the plugs are black, but that could just be from idling it a long time.
New plugs, leads, ignition module, injectors. Tried changing the fuel pressure reg, no difference.
Set the base timing to 10 degrees.
Checked for vac leaks
The only thing I haven't changed is the coil and distributor. But I'm thinking they are ok as it idles fine and seems to be ok with open throttle.
I picked up another v6 ECU and tried that (with my memcal).
Could it be the memcal? Does anyone know what they are supposed to look like? Mine says "V8 6554" on it. Is that a custom memcal?
cheers!
Wondering if anyone has an idea what this could be..
I fitted a VQ 5 litre to my VH, running the VN ECU and loom.
The motor started up first pop, no probs. No errors come up (check engine light)
It idles fine, but when i rev it over about 2000 RPM with light throttle it starts coughing and spluttering. Backfiring out the exhaust. On the road with more than 1/2 throttle it seems to have power, maybe not 100% smooth.
I think it is running rich as the plugs are black, but that could just be from idling it a long time.
New plugs, leads, ignition module, injectors. Tried changing the fuel pressure reg, no difference.
Set the base timing to 10 degrees.
Checked for vac leaks
The only thing I haven't changed is the coil and distributor. But I'm thinking they are ok as it idles fine and seems to be ok with open throttle.
I picked up another v6 ECU and tried that (with my memcal).
Could it be the memcal? Does anyone know what they are supposed to look like? Mine says "V8 6554" on it. Is that a custom memcal?
cheers!