Aero motor into Spree

xela_p2004 · Post by **xela_p2004** » Wed Feb 28, 2007 6:31 pm

I will test the compression, however, how do I check if the spark plug is firing at the right time?

xela_p2004 · Post by **xela_p2004** » Wed Feb 28, 2007 6:47 pm

How about a faulty auto bystarter or incorrectly connected on?

MySpree · Post by **MySpree** » Wed Feb 28, 2007 6:51 pm

no, it would still tommaro.

Post by **noiseguy** » Thu Mar 01, 2007 10:49 am

xela_p2004 wrote:I will test the compression, however, how do I check if the spark plug is firing at the right time?

How about a timing light?

hrnytrtlsgsxr · Post by **hrnytrtlsgsxr** » Thu Mar 01, 2007 2:30 pm

noiseguy wrote:
xela_p2004 wrote:I got the same answer at the total ruckus website, I was told it was possibly a bad or loose ground however. I will look over my wiring again, I just figured if there was spark and fuel and air it should fire.
Yes, you should be getting combustion... you may want to check that the spark is firing when the piston is at TDC. Are you getting a blue spark or a red one? If it's red your plug needs to be replaced (I assume you have a new plug, not something that's been laying around.)

Did the motor run when you removed it from the Aero?

IMO I don't think the spark is off because the mag is on the crank and mounted with a key way. The pick up is set in place with bolts too. So the devices that you would use to alter spark timing is set in place. Ok I take that back the cdi can be used to alter timing too.If is the mag then you have a screwed up crank keyway or mag which doesn't hold on the crank properly. Either way if this is the case just try to get another engine.Check compression. You usually need about 90psi to atleast be able to start the engine.

xela_p2004 · Post by **xela_p2004** » Thu Mar 01, 2007 10:56 pm

So if this mag thing is bad, the engine is bad? How about if the CDI is bad? I can just replace the CDI right? I have a few CDI's to compare it with.

xela_p2004 · Post by **xela_p2004** » Thu Mar 01, 2007 11:27 pm

Iam using a spree CDI, could that be a problem? I have a Aero CDI that I will swap in if ya think that will work.

xela_p2004 · Post by **xela_p2004** » Thu Mar 01, 2007 11:31 pm

Also keep in mind that Iam using the entire Spree harness and CDI.

hrnytrtlsgsxr · Post by **hrnytrtlsgsxr** » Fri Mar 02, 2007 6:18 am

the honda cdi's in the american mopeds for spree,aero,87,89, and elite s are all non limiting and all the same.

darat · Post by **darat** » Fri Mar 02, 2007 8:03 am

they all are limited so the engine dont over rev.

hrnytrtlsgsxr · Post by **hrnytrtlsgsxr** » Fri Mar 02, 2007 1:18 pm

it is only the japan bikes that have limiting cdi's and that is why they sell the after market cdi's. In what sense do you say the cdi's are limiting. I can get a stroker to almost 11,000 and i know of atleast two guys that get their hondas over 12,000. Almost everyone on the rock uses stock cdi's cause they last the longest. Also the owner on CI in hawaii would also say the same thing that about the american cdi being non limiting even if he is the daytona rep for hawaii and can get other aftermarket cdi's.

Post by **noiseguy** » Sat Mar 03, 2007 9:39 am

If he has spark the CDI is probably fine... I just want him to make sure the spark is hitting when the piston is up.

I think this is a compression problem personally: rings, reed valve, cylinder leaking. Or a vacuum leak.

hrnytrtlsgsxr · Post by **hrnytrtlsgsxr** » Sat Mar 03, 2007 9:05 pm

noiseguy wrote:If he has spark the CDI is probably fine... I just want him to make sure the spark is hitting when the piston is up.

I think this is a compression problem personally: rings, reed valve, cylinder leaking. Or a vacuum leak.

not necessarily. i have had instances with having spark but it was my regulator or my cdi that was bad. Yet in these instances I had a backfiring or what may seem like a lean surge.Either way it was the cdi or regutalator that did throw off the timing in some sort which made it back fire. In each scenerio i had to change each component on the electrical side one at a time to find the problem.however I too think that it is the latter of what noise guy is saying. compression or reed being broken.

xela_p2004 · Post by **xela_p2004** » Sun Mar 04, 2007 10:29 am

I will check the easy, CDI an regulater since I have extras, if that doesnt solve the problem I will inspect the reeds and rings. Thanks guys.

xela_p2004 · Post by **xela_p2004** » Sun Mar 04, 2007 10:42 am

What would a healthy set of reeds look like?