1.7 TZD cold start problem

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ianselva
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1.7 TZD cold start problem

Post by ianselva » Tue Oct 31, 2006 10:41 am

Hi, My TZD won't start on all four cylinders first thing in the morning. It starts but shakes around on 2 or 3 for a minute or 2 pushing out grey smoke all the while. If I use the heaters 3 times it will start on all 4 OK. Once it is running it is 100% OK. No smoke , no missing , no water loss, uses no oil. I have checked all the heaters and they all look the same , all heat up in the same time . This has only started since I changed tge head. Any Ideas?
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tim leech

Post by tim leech » Tue Oct 31, 2006 10:46 am

Sounds like you have tired glowplugs to me mate! There real cheap and easy to change.

M

Post by M » Tue Oct 31, 2006 10:47 am

By checking the heaters do you mean you have removed the glow plugs and watched them heat up with 12V applied? Your symptoms sound almost classic of one pot not firing up when cold - which the first port of call would be the heater plug and its connecting cable.

Someone really needs to do a nice post that we can use as a "sticky" for diesel starting problems - any takers? (Dave Burns where are you?)

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Post by Stewart (oily!) » Tue Oct 31, 2006 10:49 am

Sounds like glowplugs to me, you can test them after removal by holding them with a jumplead and connecting (touching) the terminal post onto a battery,(the jumplead being connected to the other terminal) if they arent glowing/smoking in three seconds then theyre dead.
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Post by ianselva » Tue Oct 31, 2006 10:54 am

I said I have checked all the glowplugs ( heaters) - They all get red hot within the same time off a 12V battery, (the link cable is all OK as well.)and they are only a few months old . This was the first thing I tried.
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Post by Stewart (oily!) » Tue Oct 31, 2006 11:16 am

Sorry for not reading your first post carefully :oops: the cold start misfire might be air in the fuel or dirty injectors, if you have a fuel priming bulb (depends on year) try priming the fuel system before the cold start, a shot of injector cleaner may help too. I have had similar symptoms which have cured themselves.
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Post by docchevron » Tue Oct 31, 2006 11:22 am

You say this only started when the head was changed?
I had an identical issue with a 19 n/a some time ago that was always fine, then I had to change the head (gasket went), fitted a skimmed head and it started like a bag of s*!t when cold, but was fine when hot.

That turned out to be the valves not seating fully and allowing a touch of blow by which cured itslef once it had been running for a few seconds....

I take it the cold start on the pump is working properly and the timing is ok?

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Post by ianselva » Tue Oct 31, 2006 11:29 am

Yes , once it is going it runs as well as ever , no trace of misfire etc . This does sound a possibility, I'll try and get a compression test done this week.
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Post by sleepy0905 » Tue Oct 31, 2006 11:35 am

also check the glowplug relay its on the passengerside inner wing I had this exact same trouble with my TGD it turned out to be a tired relay.
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Post by Stewart (oily!) » Tue Oct 31, 2006 12:50 pm

If its the older type of blue box relay there are a set of contacts in there which can benefit from a clean.
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Post by ianselva » Tue Oct 31, 2006 1:03 pm

I'll go and have a look at the relay , but wouldn't that effect all glow plugs not just a couple ?
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Post by Stewart (oily!) » Tue Oct 31, 2006 1:31 pm

When I had bad contacts in the relay the car would start, just not too well, there was current getting to the plugs, just not enough, the deceptive thing was that the dash lights etc were all behaving correctly, relays clicking etc.
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Post by sleepy0905 » Tue Oct 31, 2006 1:57 pm

If you need a relay i have a blue one you can have just let me know your adress by PM and i will send it to you.
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Post by tom » Tue Oct 31, 2006 3:36 pm

PM sent Marty.

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Post by RichardW » Wed Nov 01, 2006 12:33 pm

"Someone really needs to do a nice post that we can use as a "sticky" for diesel starting problems - any takers?"

What, like this one?

Diesel starting problems

:lol:

I'm happy to take comments and update, and copy it across here as required.
I NEED a BX TD.