diesel engine hard start when hot

**fmark** · August 22nd, 2012 03:53 PM

magandang hapon mga sir. Meron kaming L300 van, diesel, kapag pinatay siya pagkatapos ng mahabang byahe, like 1 hr, taz start maybe after 15 mins, mahirap siya mag start/crank. ano kaya possible na problema?or normal lang na yun?

**limarj** · August 23rd, 2012 04:03 PM

try checking the following, battery terminal connectors(when not secured, loosens up when hot), Fuel filter and Air filter.

**Retz** · August 25th, 2012 10:34 AM

malamang problema na ang battery nyan.

**blue** · August 27th, 2012 09:09 PM

there are 2 issues: 1st is difficulty in starting but starter is cranking. 2nd no crank at all.

if 1, your battery and starter is ok but maybe you have problem in your fuel system, heater plugs, etc.
if 2, you need to check you alternator, battery, battery wiring for looseness, fuses.

hth!

**sotel** · August 27th, 2012 10:17 PM

bakit kung malamig nmn mga sir e madaling umandar?

**niky** · August 28th, 2012 11:06 AM

Typically, if an engine won't crank when hot, there's a sensor failure, or a hot condition causing it not to start... since it's an L300 with mechanical injection, the possibilities of a sensor failure are not so big.

Perhaps: 1. the engine has issues cranking when hot, and still needs the glowplug. But the glowplug won't activate when the engine is still hot.

Or: 2. The EGR is stuck open and the engine can't crank.

Or: 3. The engine needs the idle to be high, like it is when cold-cranking, to start properly. Another thing that won't happen (if it's automatic and not a manual choke) when the engine is hot.