turning over real slow but not flat battery? 5k

[scope]

hey

more problems with my 5k, when i try to start it it turns over really slow like the battery is nearly dead. but the thing is, is that the battery isn't nearly dead. i changed starter motor because my old one blew, it was turning over real slow then as well but i just thought it was the starter motor. the 5k has a cam, could this be why? it is pretty much impossible to start. i have had it running though (like shit, as you can see if my other thread)

thanks for any help
i'm keen to give up soon and pay a mechanic

[Silent Knight]

Ok I'm going to jump straight to worse case scenario and say it could be a bent rod making it hard to turn over...?

[RedMist]

Bad earth?

[big_boy]

get a jumper cable & run it from the postive on the solied-battrie postive & let us know how you get on

also like sed above check the motor turn`s over freeley by hand with no spark plugs in

[scope]

will check earth when i'm home..

also like sed above check the motor turn`s over freeley by hand with no spark plugs in

i've turned it over heaps by hand (well using a ratchet and socket) and i can move it then..? if it was $&#$% would it not move for me at all or require alot of force?

[big_boy]

could be ither of thoes optiopns depending on whats rong as a ruff gess if its old on about 300mm of leaverage with no plugs it should feal like 4-5kg dumbels or if its still new & tight up to about 10kg dumbel`s on 300mm

if it turns over easy id be checking wires so conect your starter motor to the battrie with to jumper cables 1 to a good earth near on the starter motor & 1 were the power cable goes on & let us know how you get on with that

[big_boy]

also check V.D accross your battrie under crank

[johntramp]

does the motor have a good ground to chassis?

[Snoozin]

Bad earth.

Timing could be over-advanced as well.

Putting money on a bad earth first though, also, check your battery terminals, I had some cheap, rotten ones where the strands are just clamped together, and what was happening was that they weren't conductive enough, and there was a large enough amount of voltage drop that it wasn't able to crank. Make sure there's no corrosion or anything around either your earths or batt terminals too.

[rwd_mayhem]

all the earths are good, the starters not turning at all now and the earth wire from the starter and the earth wire from battery to body got hot.

[RS13]

Yeah, the more you crank, the hotter its' gonna get. Perhaps try another starter motor?

[Dell'Orto]

I reckon the timing is up the f00k. Has it always done it, or since you had the cam put in?

[Ae92typeX]

could be the starter rooted also. You say you replaced- did you replace for a reco'd one, or just another old one? Have you tried running it out of the engine?

[crispy'86]

how did ya check your earths?? Best thing would be strip back some insulation and inspect the wire strands close to battery and earth points, ya just never know and check starter off engine aswell, bet the bushes have gone in the ends of the starter

[fangsport]

is it a fresh motor and you say it has a 'cam' in it?. are you running double valve springs? if so, they could be causing strain on the rotating parts and the inner springs shouldn't be fitted until the motor is bedded in.

are you using sidedraughts? are they using mechanical or electric fuel pump?

[scope]

I reckon the timing is up the f00k. Has it always done it, or since you had the cam put in?

bought it with the cam, timing is set to no more than 8 degress btdc. cant remember exactly what, pretty sure it's on 0degrees though.

could be the starter rooted also. You say you replaced- did you replace for a reco'd one, or just another old one? Have you tried running it out of the engine?

it was another old one. nah, haven't tried running it out of the engine. spose that wouldn't of been a bad idea now it seems though i popped it so will try that with a new one

how did ya check your earths?? Best thing would be strip back some insulation and inspect the wire strands close to battery and earth points, ya just never know and check starter off engine aswell, bet the bushes have gone in the ends of the starter

pretty cheap checking, see if they were tight . they were fine with the 4k? that never showed any of these signs, ran perfect (starting to wish i had left it in)

is it a fresh motor and you say it has a 'cam' in it?. are you running double valve springs? if so, they could be causing strain on the rotating parts and the inner springs shouldn't be fitted until the motor is bedded in.

are you using sidedraughts? are they using mechanical or electric fuel pump?

no, not a fresh motor. not running double valve springs that i know of. nope, no sidedrafts, just a standard carb

it seems everyone is pointing to bad earthing so will check every earth properly by stripping insulation back. but why would they $&#$% out now when they were good with the 4k?

[scope]

Yeah, the more you crank, the hotter its' gonna get. Perhaps try another starter motor?

sometimes it sparks at the negative terminal on battery when trying to start it

[Ae92typeX]

As well as earths, give the batt terminals a good clean and ensure they clamp down well also, going by your last post.

[scope]

just checked them, all seem fine. what to do now? $&#$% wires somewhere?

[Bling]

bumping it up..... same problem on mine now been running fine for a while now.... couple weeks back it turned over REALLY slow, then burst in to life and I didnt have issues until today... it now wont start as it wont turn over fast enough ripped the starter out, so will have a tinker with it, but whats the standard rebuilt deal with these, DIY possible?