Reviving a 2009 st1300 San Bernidino police bike. Starting issue

larkmachineco

larkmachineco

Joined
Apr 19, 2025
Messages
3
Age
33
Location
Santa cruz
Bike
2009 st1300 police b
Get ready for the run down.
I bought this bike from an individual that purchased via auction. I didn't here it run, but I did turn it over and got it for 1000$

2009 st1300 101k miles. Laid down on the right hand side. Mirror and fairing cracked. No frame damage and a flat battery.

Owner said he had heard it run, but it idled real bad and couldn't fix it.

I got it home, put in a new battery and have had it one a charger ever since. I noticed some issues with the wiring when the gun lock and some lights were removed.

I checked all fuses. All good. Turned bike on, flicked the kill switch and fuel pump and FI light turned on ( no flashing). Cranked it and it started for a moment, stuttered, never revved up and eventually died. Felt like fuel starvation.
I checked each plug for spark. Had it and most came out wet. I put 4 gallons of 91 on it. Never got it to run again.

Changed map sensor and intake temp sensor with ebay take offs. Measured the temp sensor 2.8kOhm. Map sensor has power on power pins. Still no start.

Removed fuel outlet, sprayed fuel. Removed fuel injectors, they sprayed fuel. Still no start.

Sprayed starter fluid. Cranked up, revved up and flamed back a bit. (No damage).

TLDR. Runs on starter fluid, won't start or run with out it. Has pressure and injectors squirt when Removed. Seems like a too lean issue. Any thoughts.

Not battery. Last pic is included for fun. No damage was done1000012152.jpg1000012155.jpg1000012156.jpg1000012153.jpg1000012130.jpg1000012147.jpg1000012146.jpg
 
Thanking everyone in advance for whatever expertise I can get. I'm a newbie when it comes to st1300s, but I am a competent mechanic. Leaning on the experience of the community to help out!
 
Welcome to the forum.

Yeah, these old cop bikes, do have their issues. I have an '06 that I bought and was able to get it running, but it had so many other issues, I decided to do a engine swap to an '05 I picked up with a bad motor.

You can see my project: HERE!

I would suggest, getting a hold of Larry ( @Igofar ) he has a lot of experience working on these bikes, including the old cop ST1300Ps.
 
SupraSabre said:
Welcome to the forum.

Yeah, these old cop bikes, do have their issues. I have an '06 that I bought and was able to get it running, but it had so many other issues, I decided to do a engine swap to an '05 I picked up with a bad motor.

You can see my project: HERE!

I would suggest, getting a hold of Larry ( @Igofar ) he has a lot of experience working on these bikes, including the old cop ST1300Ps.
Click to expand...
Thanks for the reply. Looking at your project give me anxiety!! Great job. I'm usually pretty good at troubleshooting, but the fact it runs on starter fluid and not on the injectors is baffling.
Makes me think it's a sensor causing a lean condition. Injectors are definitely squirting when out of the intakes
Is there a diagnostic software for these bikes?
 
1745129011373.png

:redface-2x:

ST Flambé? Usually that's the last resort. Right before the call to insurance.

larkmachineco said:
I noticed some issues with the wiring when the gun lock and some lights were removed.
Click to expand...

You should apply to the Diplomatic Service. Referring to yanking on wires and looms and hacking with side-cutting pliers as "some issues" is generous to say the least. Yeah "de-copping" a police motor isn't done with the next owner in mind.

Good luck with your restore. I hope we see a pic of it fully restored not fully involved.
 
First step with any fuel injected engine is to check to see if there are any failure codes. Even if there are not any currently causing the FI light to illuminate there may be a historical one that may provide a clue as to where to look next.

See below on how to check and clear the fault codes.
You won't be able to use the alternate method if it doesn't run but you will have it for future reference.

ECM Failure Codes
ECM Check and Reset Quick Guide

Alternate method to the Honda specified procedure for clearing codes;
- Warm the engine to full operating temperature.
- Shut the engine off by turning the ignition key to the off position.
- With the side-stand in the deployed position, i.e. The down/extended position.
- Start the engine without touching the throttle.
- Without touching the throttle, allow the engine to run until the radiator fans come on.
- Stop the engine by the engine kill switch- not the ignition switch.
- Turn the ignition key to the off position.
All stored failure codes should now be cleared.
 
Hover your cursor over the blue 'Igofar' in post #3, click on start conversation. Send Larry your name and phone number, he will call you back (if you are not retired, tell him when is best to call you).
 
Maybe you have bad gas in the fuel rail. I see that there is new gas in the tank but maybe the lines and rail are full of bad gas so it won't run long enough to get to the new gas that you put in?
 
Welcome, from sunny Alabama!
My primary value to this forum, if we can call it that, is drinking coffee and offering up sarcastic remarks to annoy everyone.
I've seen a few retired police bikes stumble and roll through here, but I haven't done any actual restoration or repair projects beyond replacing a non-functional secondary master cylinder. Never mind, that may come later.
The best advice I can offer has already been mentioned, which is to reach out to @Igofar aka Larry.
Best of luck, and I'll be excitedly watching your progress to revive and rescue another fabulous ST1300 from an otherwise shameful and ignominious tragic end.
We're all pulling for you, the white ones have always appealed to me, other than the work which may be required to make it road-worthy again.
You are definitely in the right place to find the answers you need!
 
Houston we have Contact....
The OP and I have been chatting a bit on the :WCP1: and we've made progress getting the bike to start and run.....However, I'm now pointing out all the other things that are damaged and need inspecting.
The OP knows his way around tools, and its been very easy to guide/instruct him so far.
I'm sure he will post an Update here as to what has been found, and how it was repaired etc.
I'm sure he has a day job, so please be patient and he'll be along shortly.
:WCP1:
 
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