Crosflow powered 7 - won't start

Crosflow powered 7 - won't start

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Discussion

Equus

16,918 posts

101 months

Sunday 19th February 2017
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Eric Mc said:
That's exactly why I'm asking.
Sorry - I didn't realise you were asking: there was no question mark on the end of your statement that your arms weren't long enough to reach.

Not intending to be rude, but whilst the basic faultfinding is really simple (if you've got a spark and petrol, it should run, so it's just a matter of finding out which is missing, and where), it involves playing with flammable liquids and very high voltages, so if you're likely to do silly things like holding a spark plug in your hand as the live ignition system tries to fire it, you're best not touching anything and getting someone in.

Tango7

688 posts

226 months

Sunday 19th February 2017
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Went round to help start a Xflow car after a winter lay up very similar to yours and it was cranking fine, had fuel and sparks but just wouldn't fire up. In the end we put some jump leads on to give it a bit extra oomph,cleaned the plugs, spun the starter and pumped throttle wide open to clear the over fuelling and cranked it for quite some time and then it fired up and cleared itself. It did take a few minutes of cranking! I put it down to old fuel in the carbs which had then fouled the plugs etc. As soon as it had warmed up, there was no problem with starting again.

Eric Mc

Original Poster:

122,039 posts

265 months

Monday 20th February 2017
quotequote all
Equus said:
Sorry - I didn't realise you were asking: there was no question mark on the end of your statement that your arms weren't long enough to reach.

Not intending to be rude, but whilst the basic faultfinding is really simple (if you've got a spark and petrol, it should run, so it's just a matter of finding out which is missing, and where), it involves playing with flammable liquids and very high voltages, so if you're likely to do silly things like holding a spark plug in your hand as the live ignition system tries to fire it, you're best not touching anything and getting someone in.
If I'd known what to do, I wouldn't have opened the thread in the first place. Although I'm no mechanic and freely admit it, I have taken part in car maintenance and repair courses, including one that was for a whole year. At no point was I ever advised to carry out any sort of test using spark plugs lying on exhaust manifolds - probably because the teachers would not have been silly enough to advise such a tactic.

As it is, I had no intention of doing this because, in the back of my mind, it did seem not quite "right".

Hugo a Gogo

23,378 posts

233 months

Monday 20th February 2017
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he's right though, it's a basic old-school fault finding technique to check for a spark

check fuel as advised too, jump start it for extra oomph

or call the AA/a mechanic

Grumbly

295 posts

148 months

Monday 20th February 2017
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Eric, I work in Aldershot and believe you are local? If you are stuck I'd be happy to pop over one evenening to see if we could at least narrow the posibilities a bit.

bcr5784

7,115 posts

145 months

Monday 20th February 2017
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Eric Mc said:
. At no point was I ever advised to carry out any sort of test using spark plugs lying on exhaust manifolds - probably because the teachers would not have been silly enough to advise such a tactic.

As it is, I had no intention of doing this because, in the back of my mind, it did seem not quite "right".
Well the course missed out on one of the basics. That is something mechanics have been doing forever.

Eric Mc

Original Poster:

122,039 posts

265 months

Monday 20th February 2017
quotequote all
Maybe they were concerned about the dangers and didn't want to be sued if some pupil electrocuted themselvessmile

Eric Mc

Original Poster:

122,039 posts

265 months

Monday 20th February 2017
quotequote all
Grumbly said:
Eric, I work in Aldershot and believe you are local? If you are stuck I'd be happy to pop over one evenening to see if we could at least narrow the posibilities a bit.
That would be very kind of you. I'll e-mail you my details so we can get in touch.

Grumbly

295 posts

148 months

Monday 20th February 2017
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Eric, you can e mail me at grumblymike at outlook dot com.

bcr5784

7,115 posts

145 months

Monday 20th February 2017
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Eric Mc said:
Maybe they were concerned about the dangers and didn't want to be sued if some pupil electrocuted themselvessmile
If so just another example of H&S gone mad.

Eric Mc

Original Poster:

122,039 posts

265 months

Monday 20th February 2017
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It looks like a solution may be imminent - hopefully. Thank you Mike - and to all the others who provided useful information.

Equus

16,918 posts

101 months

Monday 20th February 2017
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Eric Mc said:
Maybe they were concerned about the dangers and didn't want to be sued if some pupil electrocuted themselvessmile
Working on cars is dangerous. They can crush you, burn you, scald you, electrocute you, tangle you in their whizzy bits, and even (now that we have airbags) explode in your face.

Working on them requires a degree of common sense. If you don't have such, leave them alone.

BertBert

19,059 posts

211 months

Monday 20th February 2017
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er, choke?
freddytin said:
Try no choke

freddytin

1,184 posts

227 months

Monday 20th February 2017
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BertBert said:
er, choke?
freddytin said:
Try no choke
I have always found using no choke for that intial fire up the best solution when using Easystart or similar.

Don't go overboard with the accelerator pump , and feed the choke out to suit, once you have lit her up .

BertBert

19,059 posts

211 months

Monday 20th February 2017
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My point was questioning whether the x-flow caterham had a choke!

Grumbly

295 posts

148 months

Monday 20th February 2017
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Weber carbs have a choke mechanism, but it not really necessary and often not connected. A couple of pumps on the throttle will provide plenty of fuel for a cold start, assuming of course that there's fuel in the float chambers.

Eric Mc

Original Poster:

122,039 posts

265 months

Monday 20th February 2017
quotequote all
BertBert said:
My point was questioning whether the x-flow caterham had a choke!
Simple answer - no.

And cars have "whizzy bits"?

Equus

16,918 posts

101 months

Monday 20th February 2017
quotequote all
Eric Mc said:
And cars have "whizzy bits"?
Well some do. Yours is failing to whiz at the moment, Eric.

freddytin

1,184 posts

227 months

Monday 20th February 2017
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BertBert said:
My point was questioning whether the x-flow caterham had a choke!
Sorry BB, i was just giving general advice.

Which apparently was obviously pointless in this instance . wink



Eric Mc

Original Poster:

122,039 posts

265 months

Monday 20th February 2017
quotequote all
Equus said:
Eric Mc said:
And cars have "whizzy bits"?
Well some do. Yours is failing to whiz at the moment, Eric.

It may not be whizzing, but it is chugging a bit.

(You see, I'm well versed in this technical lingo).