04-05-2012, 06:50 AM #1
2005 RXT cranks slow even with spark plugs out
So I'm working on a buddies '05 RXT that he just bought. It has 113 hours on it. It the classic "Owner said all it needs is a new battery and it'll run fine." Well, we charged the battery and added two jumper/booster packs to it and it still cranks slow (almost doesn't crank at all) and won't start. So I pulled the plugs and it cranks a little better but still slow. It also sounds like something is seized. It squeals a little bit when cranking sometimes. I don't know it might be the starter squealing.
I did a quick search and looks like I need to try jumping the starter solenoid and see how it does. Other possibilities I can across is a seized jetpump bearing, seized supercharger or a bad starter. Or maybe even a bad engine.
What do you guys think? Am I on the right track? Any other ideas?
04-05-2012, 07:16 AM #2
04-05-2012, 07:30 AM #3
Do a compression check, it is possible the cyl are rusted down. Also check the voltage at the starter when cranking. What did plugs look like?
04-05-2012, 07:55 AM #4
You can't just pull the pump and crank it over, the driveshaft will be unsupported and will whip around and cause damage to the tunnel. If you pull the driveshaft too, oil will come out (lots) when you crank the engine over. Maybe remove the pump and see if you can turn the impeller by hand to check the pump.
Definitely pull the SC off and see if that turns by hand too, should spin very easily. I agree you want to check both pump and SC first to rule those out, then next the engine. Squirt some light oil down the cylinders (maybe WD 40) too. The squealing is not good ... hopefully it is SC bearings and nothing else.
04-05-2012, 08:18 AM #5
04-05-2012, 03:49 PM #6
04-05-2012, 04:48 PM #7
04-05-2012, 05:00 PM #8
It could be. I can't wait to tear into this thing and figure it out. Sooner I fix it, the sooner I get to take it out and test ride it!
My truck is in the body shop, so my other friend is gonna bring it over later tonite
04-05-2012, 07:02 PM #9
- Join Date
- Dec 2006
- Crest Hill, IL
You can quickly pull the SC discharge tube that goes to the throttle body...If its got silver dust in it, SC failed...
04-05-2012, 09:15 PM #10
Well in that case, I think the supercharger failed. I took the duct off, stuck my fingers in there and they came out with a grey/silver something on them. I wasn't able to remove it tonite because I don't have my inverted torx sockets at home.
I can jiggle(rotate) the the SC impeller a little bit. I'll have to just take it off tomorrow and check it out.
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