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Old May 9th, 2012, 07:57 PM
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Chris Davis
94 NAS D90 6.2LS
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Running hot--new plugs?

Ok, so now that it is warm out, my previously cool running D90 is not running hot when going uphill. I have a block tester, so I did that and stayed blue :-) I adjusted my timing--no change.

I put an entire new front cover on the engine--so new water pump is the only real change. Fans didn't change because I am running a dual Flexalite electric fan. While the radiator was out, I had a leak in it fixed so it should be good (it looks good, I am going to measure the temp in/out next). I changed the plugs to Bosch Platinum +2 which I have never used before and quite frankly, only got them cause they were out of the champions.

I am going to check all the culprits, including the thermostate, radiator cap, all that shit. But these are those "no gap adjust" plugs with two electrodes on them--I am leaning toward that. Since I am not going to dick around with it tonight, I just wondered if anyone has had good/bad experiences with that plug or have any ideas on this situation.

Everything runs great---and it cools down when I am not going uphill...

hmmmmmm
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Old May 9th, 2012, 08:12 PM
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Charles Galpin
'94 D90 ST, '63 SeriesIIA
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Make sure you have properly burped the cooling system. No better ideas than that, sorry.
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Old May 9th, 2012, 08:38 PM
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Phillip
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To start with those Bosch plugs away and get a set of Champions or NGK's. BPR5EY is the NGK part number.

Did the shop flow test the radiator before they sent it out?
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