frustrated. not running right.

se7ensport · Post by **se7ensport** » Wed Sep 27, 2006 2:43 pm

Spend yesterday taking head off to sort valve seats. All have been recut, lapped in and set correctly.

however, on putting it all back together its not running as it did before:
1. revs dont drop off immediately when throttle is lifted
2. its down on power
3. slight misfire at tick over- could be pre ignition not sure.

spec is as follows standard 2.0 pinto on zzr1200 carbs with alpha ecu (yet to be full calibrated but was working near perfect).

I'm wondering if I might have the cam timing out by a tooth, although it looks right, its very hard to see the crank timing due to the trigger disk for the ecu
I've checked for manifold leak by spraying joint with WD40 but revs didn't increase, I have a spare gasket so will probably fit anyway as it’s a quick job any other suggestions greatly appreciated.

cheers

Alex

Schrodinger · Post by **Schrodinger** » Wed Sep 27, 2006 3:19 pm

Alex
Have you checked to make sure that the throttles are closing right off and that there is nothing in the throttle pedal/cable/mech. that is binding enough to stop the throttle closing properly

se7ensport · Post by **se7ensport** » Wed Sep 27, 2006 3:26 pm

afternoon

I'm pretty confident that the linkages working smoothly and fully closing as it was my first suspicion, although it wouldn't explain the other symptoms.

It's another item to add to the check list which currently stands at; timing between crank and cam, inlet gasket, valve clearances + throttle linkage

Tango Man · Post by **Tango Man** » Wed Sep 27, 2006 5:08 pm

Sounds like timing

WD40 is not the best to check for leaks, use easy start,

Good luck, Dave

se7ensport · Post by **se7ensport** » Sat Sep 30, 2006 6:23 pm

Back up and running great, turned out to be the timing

Cerberus · Post by **Cerberus** » Sat Sep 30, 2006 6:26 pm

se7ensport wrote:Back up and running great, turned out to be the timing

Excellent news, are you coming to eelmore tomorrow?

Phil

se7ensport · Post by **se7ensport** » Sat Sep 30, 2006 6:55 pm

I'd love to but i've got tickets for the bristol bath match, if it had been any other clash i'd have passed them on to a mate. I'm hoping Rob will let us know when he has another sprint on as i'm keen to see him and his motor in action.

I notice you are also bristol based, if you'd like to catch up for a blast or have a nose around my car let me know.

Alex

Cerberus · Post by **Cerberus** » Sat Sep 30, 2006 7:07 pm

se7ensport wrote:I'd love to but i've got tickets for the bristol bath match, if it had been any other clash i'd have passed them on to a mate. I'm hoping Rob will let us know when he has another sprint on as i'm keen to see him and his motor in action.

I notice you are also bristol based, if you'd like to catch up for a blast or have a nose around my car let me know.

Alex

Hi alex, i'm only going down until lunch time-ish as i have to get back as someone is coming to buy my motorhome(hopefully), so if that happens i should have mine in a week or two, which means if your up for it we could have a pie and a pint sometime and do both

Phil

se7ensport · Post by **se7ensport** » Sat Sep 30, 2006 7:24 pm

pie and pint, now you are talking

Good luck selling the motorhome, have you already got a car in mind then?

Where are you based? I'm in Emersons Green.

Alex

Cerberus · Post by **Cerberus** » Sun Oct 01, 2006 6:39 pm

se7ensport wrote:pie and pint, now you are talking Good luck selling the motorhome, have you already got a car in mind then?

Where are you based? I'm in Emersons Green.

Alex

Hi Alex, i am in knowle south bristol, so just down the ring road, and yes i have a car in mind and with your good luck wish i have sold the motorhome, so it looks like i owe you a pint

will let you know when i get it and perhaps catch up.

Phil