Mazda Bravo Smokey and Rough on Start up ?????

Submitted: Monday, Dec 02, 2013 at 18:12
ThreadID: 105352 Views:5717 Replies:4 FollowUps:3
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Hi guys , I am new here and need some help . Just bought a 99 Bravo 2.5 Diesel with 136000 KMs on it , well looked after .
Just one problem . When I start it up in the morning , it idles rough and smokes a bit , leaving soot on the ground . It goes away after a few minutes and then goes great .
Any ideas ?

Thanks ,
Jeff
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Reply By: Notso - Monday, Dec 02, 2013 at 18:38

Monday, Dec 02, 2013 at 18:38
Quite possibly glo plugs.

These heat up and aid cold starting. If they fail, the thing will run rough and blow whitish smoke for a few seconds till it warms up.
AnswerID: 522488

Reply By: Member - Trouper (NSW) - Monday, Dec 02, 2013 at 18:53

Monday, Dec 02, 2013 at 18:53
sounds like glo plugs. My son has a 2005 model Bravo with 250k on the clock and had same problem, changed glo plugs ($25. each) himself it's very easy and all's good. Now it starts instantly.

Jeff
AnswerID: 522489

Follow Up By: P and JM - Monday, Dec 02, 2013 at 22:07

Monday, Dec 02, 2013 at 22:07
Hi All,

Agree to the Glow Plugs. Own a 2005 Bravo 2500 (2.5 ltr) Diesel and replaced the glow plugs a couple of times (over a period of time) and problem solved.

Diesel Mechanic recommend that if you have this problem in winter to turn IGN on/off a couple of times is a temporary measure and it works.

Cheers P&J.
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FollowupID: 803573

Reply By: Jeff P1 - Monday, Dec 02, 2013 at 19:11

Monday, Dec 02, 2013 at 19:11
Notso ... mine blows black smoke and soot on the ground .
AnswerID: 522490

Follow Up By: Member - Toyocrusa (NSW) - Monday, Dec 02, 2013 at 19:56

Monday, Dec 02, 2013 at 19:56
Saw a similar model doing something similar last year so we replaced the glow plugs. That seemed to improve it but after another few weeks it was similar so sent it off to a diesel specialist who told us the head was cracked in an exhaust port. He said it was becoming a bit common in that model when they got up to around 150k. I think it ended up costing the owner a couple of grand to replace it. It did not use coolant at the time and the main symptoms were rough running start and soot. Hope it's not your problem but just a heads up for you. Bob.
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FollowupID: 803566

Follow Up By: Notso - Monday, Dec 02, 2013 at 20:18

Monday, Dec 02, 2013 at 20:18
Yes, black smoke is usually over fueling. White smoke is unburned fuel and has a particularly nasty smell.
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Reply By: Jeff P1 - Tuesday, Dec 03, 2013 at 16:42

Tuesday, Dec 03, 2013 at 16:42
Thanks fellas , I will replace the Glow Plugs and see what happens . I hope this is all it is , as I was very wary of getting a Diesel due to the cost of repairs .
AnswerID: 522520

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