Does this sound like Fuel Injector Issues?

[gman88667733]

I have a 1.1 Fiat Panda 2004 with 39k miles. It has been driven sedately and on very short trips all of its life before I got it. Recent symptoms are - fuel economy worse than should be by 3-4mpg. Fuel smell inside cab and outside at idle, slight bucking under certain loads when accelerating and also when taking foot off of accelerator, the car started this morning and died immediately, restarted fine and then ran really rough for 10 seconds, it was then completely fine afterwards.(This is the first time in the 2 months i've had the car that it has done it)
Finally, when restarting the car when warm (sometimes cold, but mostly warm) it cranks for a lot longer than when cold, a good 3 seconds longer i'd say sometimes!

To me, this all sounds like clogged or dirty injectors. Is it worth trying a bottle of forte injector cleaner and seeing if it fixes it? If not, I can source a full set of injectors for £30 or less.

Any ideas? Cheers

[thatdude]

Difficulty starting when warm / hot suggests a bit of a compression issue there - is it worth inspecting the valve clearances? What other basic servicing things have you done (I'm assuming you've done plugs etc)?

[gman88667733]

I've done oil, filter, plugs, cleaned the top side of the throttle body, changed the alternator belt.
When warm it cranks just as fast, but it just cranks for 2-3 seconds before actually starting, still starts fine.

[Olas]

o2 sensor, or coolant temp sensor. look at the stft and ltft for definitive answers.

[gman88667733]

Olas said:

o2 sensor, or coolant temp sensor. look at the stft and ltft for definitive answers.

What level of diagnostics do I need to be able to read that?

Planning on at least taking the injectors out to check them to rule that out, but may still try some forte flush to see if that helps.

[Olas]

gman88667733 said:

What level of diagnostics do I need to be able to read that?

Planning on at least taking the injectors out to check them to rule that out, but may still try some forte flush to see if that helps.

carly or torque pro app on your phone.

[gman88667733]

Do they require specific obd adapters? Or will a generic Bluetooth one work?

[scarble]

Generally fuel injector faults are well reported over OBD2, as should be anything that drastically effects emissions.
Any ELM327 OBD2 adapter should read OBD2 codes the same, but they can vary in the quality of their descriptions, googling the number can help though.
Several free apps available, I've used Torque successfully to diagnose failed injectors.

[gman88667733]

Weirdly, it started fine this morning.
I cleaned the MAP sensor last night, it was a bit oily, but not exactly clogged up.
I've got an obd2 bluetooth adapter coming on Friday, so i'll try a scan then and see if it comes up with anything useful.
The injectors are coming out at the weekend to be checked over, hopefully there will be obvious signs of clogging, or a leak etc...
Fuel economy is definitely very poor right now, so hopefully I can get to the bottom of it without throwing parts at it,