Hi all,
Just thought I would run this by you all see what you all think ??
I have an 1987 Softail Evo After purchasing a chrome Cam cover and set of rocker boxes.. I decided to have them fitted by the Local Custom Hartley Shop rather than attempting the job myself.
When they pulled it down they told me that the cam in the bike was only a Andrews EV1 Grind. They advised that the EV3 would be a good upgrade while everything was apart. .. Long story short..I got the bike back and it ran like a dream better power etc etc.
The next day I took it for a ride. About 80 miles into the ride while coasting down a windy mountain road, on deceleration I heard an loud Backfire .. BANG and the engine stopped. In trying to start the Bike I immediately noticed that it was turning over very easily like the engine had lost compression.
(Normally the Starter would labor to turn over the engine )
The engine would not fire at all.. Not a whimper. Plenty of spark and fuel but no one kick
So today took the bike back to the shop. They first checked over the work that they did and advised me that all looked fine, Timing marks were in order rockers fine everything turning and lifting and closing fine. However compression test only came up with about 25psi.
So they Pulled the heads off. Pistons ok, Piston to bore clearance within tolerances, no visible case cracks or oil leaks etc. The only thing they could find was the valve seats did leak slightly. ( Apparently they fill the chambers with some fluid and check for leaks ). Valves were not burnt out or bent just the seats looked carbonized and leaked slightly.
They are now suggesting that they are going to lap the valves and fit a new set of Hydraulic lifters and put it together.
They believe that all will be fine. The suggestion is that perhaps the lifters were hydraulic-ing whatever that means.
Is this at all likely..?
I cannot understand how this engine which until this happened ran fine and seems to have plenty of compression one day. Lets out a awful Bang Backfire and then has no compression and no obvious reason for the lack of compression.
Can anyone help
Just thought I would run this by you all see what you all think ??
I have an 1987 Softail Evo After purchasing a chrome Cam cover and set of rocker boxes.. I decided to have them fitted by the Local Custom Hartley Shop rather than attempting the job myself.
When they pulled it down they told me that the cam in the bike was only a Andrews EV1 Grind. They advised that the EV3 would be a good upgrade while everything was apart. .. Long story short..I got the bike back and it ran like a dream better power etc etc.
The next day I took it for a ride. About 80 miles into the ride while coasting down a windy mountain road, on deceleration I heard an loud Backfire .. BANG and the engine stopped. In trying to start the Bike I immediately noticed that it was turning over very easily like the engine had lost compression.
(Normally the Starter would labor to turn over the engine )
The engine would not fire at all.. Not a whimper. Plenty of spark and fuel but no one kick
So today took the bike back to the shop. They first checked over the work that they did and advised me that all looked fine, Timing marks were in order rockers fine everything turning and lifting and closing fine. However compression test only came up with about 25psi.
So they Pulled the heads off. Pistons ok, Piston to bore clearance within tolerances, no visible case cracks or oil leaks etc. The only thing they could find was the valve seats did leak slightly. ( Apparently they fill the chambers with some fluid and check for leaks ). Valves were not burnt out or bent just the seats looked carbonized and leaked slightly.
They are now suggesting that they are going to lap the valves and fit a new set of Hydraulic lifters and put it together.
They believe that all will be fine. The suggestion is that perhaps the lifters were hydraulic-ing whatever that means.
Is this at all likely..?
I cannot understand how this engine which until this happened ran fine and seems to have plenty of compression one day. Lets out a awful Bang Backfire and then has no compression and no obvious reason for the lack of compression.
Can anyone help