Slight cough and hiccup on starting

[Hymerbell]

So...when I start my engine....2004 Fiat Ducato 2.8 JTD unless I give it a tiny bit of throttle it sometimes doesn’t start....also when I turn it off you hear a little knock from underneath the van and a half second run on....it’s not a problem now...but thought I might try and sort it out before perhaps it doesn’t start when I’m somewhere Inconvenient. After its started it runs like a dream all day....any ideas....starter motor, fuel pump (is it Bosche?)...jets ? earthing strap....I’ve put a new fuel filter on...got the scuffed knuckles to prove it....

 

[Off da Grid]

Maybe the engine needs a decoke

 

[Figaro]

Maybe try some of that diesel Forte treatment ?
Other brands are available

 

[Boris7]

Slight cough and hiccup,

Is this a new cough?

Is it getting hot?

Does everything smell as it should?

Perhaps you should leave it alone for 14 days

 

[Landy Andy]

When was the last time it had a really good run?

Often called an Italian tuneup.

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[Hymerbell]

When was the last time it had a really good run?

Often called an Italian tuneup.

600 miles in last 3 weeks

 

[Hymerbell]

Maybe the engine needs a decoke

How does that work ?

 

[Raul]

Elbow grease on air valve and intake manifold may be due. Excessive oil vapour in the intake may impede the clean air for a ideal mixture, and aids soot build up. I once de cocked a combo van 1,7d Isuzu, full of soot in the intake close to air valve( throttle body). Was a pig to start, once cleaned was like shit of a shovel, like new.

 

[Boringfrog]

600 miles in last 3 weeks

Hi revs for couple of minutes, say 3rd gear on the motorway.

 

[Hymerbell]

Elbow grease on air valve and intake manifold may be due. Excessive oil vapour in the intake may impede the clean air for a ideal mixture, and aids soot build up. I once de cocked a combo van 1,7d Isuzu, full of soot in the intake close to air valve( throttle body). Was a pig to start, once cleaned was like shit of a shovel, like new.

Hmm...if I knew how to do that I would...

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[Raul]

Hmm...if I knew how to do that I would...

Plenty on YouTube, the process is the same on most diesels. One more culprit for excessive soot build up on intake, is a faulty egr.

 

[Off da Grid]

Maybe just needs a good boot full, once in a while.

 

[ambulancekidd]

Have a browse on fleabay for Liqui Moly, there are various types for cleaning injectors etc.

Our elderly Kon-Tiki (1995) 2.5 turbo diesel was starting instantly, but wasn't happy on tickover til warm, the engine was very lumpy, however it pulled really well once warmed up.
So it got an Italian tune up while the Liqui Moly did its work, a run to Hawick & back about 220miles did it the world of good.

That treatment has certainly worked its magic.

 

[pappajohn]

Maybe the engine needs a decoke

There's a word from the past.
I haven't decoked an engine for going on 40 years.
Modern fuel, oil, electronics and tolerances have all but put that in the past.

 

[Hymerbell]

Have a browse on fleabay for Liqui Moly, there are various types for cleaning injectors etc.

Our elderly Kon-Tiki (1995) 2.5 turbo diesel was starting instantly, but wasn't happy on tickover til warm, the engine was very lumpy, however it pulled really well once warmed up.
So it got an Italian tune up while the Liqui Moly did its work, a run to Hawick & back about 220miles did it the world of good.

That treatment has certainly worked its magic.

Right Liqui Molly and some Diesel Forte....I’ll start looking out for it...cheers

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[Podney]

Right Liqui Molly and some Diesel Forte....I’ll start looking out for it...cheers

Yes.... but don’t forget to thrash the bloody thing,she’ll thank you for it in the long run!

 

[nicholsong]

Hi revs for couple of minutes, say 3rd gear on the motorway.

I do that every year with our Jtd2.8, just before the MOT to ensure it passes the emissions test.

 

[Hymerbell]

Have a browse on fleabay for Liqui Moly, there are various types for cleaning injectors etc.

Our elderly Kon-Tiki (1995) 2.5 turbo diesel was starting instantly, but wasn't happy on tickover til warm, the engine was very lumpy, however it pulled really well once warmed up.
So it got an Italian tune up while the Liqui Moly did its work, a run to Hawick & back about 220miles did it the world of good.

That treatment has certainly worked its magic.

Right can’t seem to obtain Liqui Moly in France but there are alternatives. Do these egr and injector cleaners just go in the petrol tank or do I have to find the inlet valve manifold whatever it is and dismantle it to spray the stuff in ?

 

[Raul]

The injector cleaner goes in the fuel tank. The egr gets sprayed in the inlet, after you remove the air filter duct. Of course this will help to be effective before a long drive.

 

[ambulancekidd]

Right can’t seem to obtain Liqui Moly in France but there are alternatives. Do these egr and injector cleaners just go in the petrol tank or do I have to find the inlet valve manifold whatever it is and dismantle it to spray the stuff in ?

On the Continent it might be easier to get some Wurth Gen X Injector cleaner, they are a huge company.
I doubt if your EGR has an issue, these engines aren't the most technologically advanced & EGR issues are not really common.

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[Hymerbell]

I do that every year with our Jtd2.8, just before the MOT to ensure it passes the emissions test.

What are big revs....3000rpm or more ...hate thrashing engines....think I’m going to hear a big bang and engine explodes.

 

[Hymerbell]

The injector cleaner goes in the fuel tank. The egr gets sprayed in the inlet, after you remove the air filter duct. Of course this will help to be effective before a long drive.

Looked on YouTube....seemed to say remove hose to turbo....can’t seem to find any picture of a 2.8 JTD to go from. Perhaps I’ll try the injector cleaner first. Easier.

 

[Hymerbell]

On the Continent it might be easier to get some Wurth Gen X Injector cleaner, they are a huge company.
I doubt if your EGR has an issue, these engines aren't the most technologically advanced & EGR issues are not really common.
View attachment 421933

Yes couldn’t find Liqui Moly anywhere. That one says petrol ! I’m diesel....assume they do a diesel one.

 

[Boringfrog]

What are big revs....3000rpm or more ...hate thrashing engines....think I’m going to hear a big bang and engine explodes.

I take mine up to 4k revs regularly.

 

[Hymerbell]

I take mine up to 4k revs regularly.

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[Boringfrog]

☹

Uphill 2nd gear.......you should see the smoke.

 

[phillipsheila]

Our last motor was 2.8 smoked alot when we had it 3rd gear max revs up steep hill cleared it it run much better after with no smoke

 

[Hymerbell]

Our last motor was 2.8 smoked alot when we had it 3rd gear max revs up steep hill cleared it it run much better after with no smoke

What’s max revs...surely not 6000rpm ? I notice you’ve had 16 MH’s.....any reason for that?

 

[phillipsheila]

cant remember sorry. it wouldnt rev any higher it stops when it hits the limiter

 

[Landy Andy]

You can hold your foot flat to the floor whilst driving and it won’t explode under its own power. Just don’t increase the revs by going from flat out 4th gear to 2nd gear.

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