Having an issue with my turbo Gen 1 not wanting to idle below about 2500, and stuttering slightly up to around 5000. Seems to run ok in the 5-7000 range, but I haven't pushed it as there's clearly a problem.
It will run for a moment at lower engine speeds (e.g. 1300rpm) but then abruptly die, usually within 10 seconds or so, sometimes nearly immediately.
Running between 4000-5000 sounds slightly stuttery like it's missing on a small percentage of spark cycles.
Initially I thought CKP sensor, as I changed to a high output stator roughly around when the problem began. The CKP coil resistance is in spec though, and I'm reading just over 5v from it while cranking (spec is over 3v), so it seems fine.
Coil resistances are ok. Fresh and newly gapped plugs (smaller gap for turbo). Fuel pump was changed for other reasons very recently, so no concern about it being bad or clogged filters. Adjusted TPS. Checked all connectors and vacuum lines.
The engine seems to die suddenly and totally rather than struggling first, so I'm thinking electrical rather than fuel.
Sidestand switch works properly. Tipover sensor and bracket look fine. Haven't yet tried bypassing them though.
Frustratingly the ECU isn't throwing any codes to help me track down the problem.
Any suggestions would be much appreciated.
It will run for a moment at lower engine speeds (e.g. 1300rpm) but then abruptly die, usually within 10 seconds or so, sometimes nearly immediately.
Running between 4000-5000 sounds slightly stuttery like it's missing on a small percentage of spark cycles.
Initially I thought CKP sensor, as I changed to a high output stator roughly around when the problem began. The CKP coil resistance is in spec though, and I'm reading just over 5v from it while cranking (spec is over 3v), so it seems fine.
Coil resistances are ok. Fresh and newly gapped plugs (smaller gap for turbo). Fuel pump was changed for other reasons very recently, so no concern about it being bad or clogged filters. Adjusted TPS. Checked all connectors and vacuum lines.
The engine seems to die suddenly and totally rather than struggling first, so I'm thinking electrical rather than fuel.
Sidestand switch works properly. Tipover sensor and bracket look fine. Haven't yet tried bypassing them though.
Frustratingly the ECU isn't throwing any codes to help me track down the problem.
Any suggestions would be much appreciated.